{"title":"Doepfer Oscillators","description":"","products":[{"product_id":"a-110-standard-vco","title":"Doepfer - A-110-1: Standard VCO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eModule A-110-1 is a voltage-controlled oscillator. This VCO's frequency range is about eight octaves (ca. 15Hz ... 8kHz). It can produce four waveforms simultaneously: rectangle, sawtooth, triangle, and sine wave (triangle and sine shapes are not perfect, see remark below). The output levels are typically 8Vpp for saw and rectangle, and 10Vpp for triangle and sine. The frequency or pitch of the VCO is determined by the position of the octave (Range) switch and tuning (Tune) knob, and by the voltage present at the CV inputs. Frequency modulation (FM) of the VCO is therefore a possibility. Footage (the octave of the fundamental) is set by the Range control in five steps, and Fine tuning controlled by the Tune knob. The tune knob range is about +\/-1 semitone for older modules. Since about middle of 2015 the value has been increased to about+\/- 1\/2 octave. In the A-110 service manual is described how to modify the range.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eYou can control the pulse width of the square wave either by hand, or by voltage control - Pulse Width Modulation or PWM.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIn addition the A-110 service manual is available as an example for the A-100 service manual that is available at extra charges. This document describes also how to modify the sensitivity of the tune control (changing the value of the resistor R5), how to re-adjust the 1V\/octave scale and the frequency offset (i.e. the absolute pitch). Such modifications should be carried out by experienced users only !\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical remarks:\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe core of the A-110-1 is a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by internal waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinite fast but takes a little bit of time the derived waveforms triangle and sine are not perfect ! At the top of the waveform they have a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converters. The sine is derived from the triangle by a simple diode-based converter and the sine shape is not perfect (only a rounded triangle). To obtain a nearly perfect sine signal the triangle-to-sine converter module A-184-2 is recommended. It includes also a voltage controlled crossfader to fade between two waveforms.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIf a perfect triangle is required the A-111-1 or A-111-2 is recommended. For a perfect sine wave the thru zero quadrature VCO A-110-4 or the quadrature LFO\/VCO A-143-9 is recommended.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe sawtooth output of the A-110-1 has a falling (or negative) slope as shown on the front panel.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eA simpler VCO (without sine, without rotary switch, but with linear FM input) is the module A-110-2.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWidth: 10TE \/ 10HP \/ 50.5 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepth: 55 mm (measured from the rear side of the front panel)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCurrent: +90mA (+12V) \/ -20mA (-12V)\u003c\/span\u003e\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884387676207,"sku":"","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a-110.jpg?v=1536180452"},{"product_id":"a-110-2-basic-vco","title":"Doepfer - A-110-2: Basic VCO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eModule A-110-2 is a low-cost voltage-controlled oscillator. It's a slightly reduced version of the standard VCO A-110-1. Compared to the A-110-1 the A-110-2 has no sine output and the (expensive) octave rotary switch is replaced by a 3-position toggle switch. In return the A-110-2 is equipped with an additional linear FM input and a soft sync input. A jumper is used to select the range of the tune control between about 1\/2 octave and about 4 octaves. The width of the module is only 8 HP compared to the 10 HP of the A-110-1.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eAll other features are essentialy the same as for the A-110-1.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eExplanation of the jumpers and trimming potentiometers:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJP2: CV connection to A-100 bus\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJP3: range of Tune control (installed = about 4 octaves, not installed = about 1\/2 octave)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJP4: AC\/DC coupling of the linear FM input (installed = DC coupling, not installed = AC coupling)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eP5: 1V\/Oct scale\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eP6: frequency offset\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eP7: high-end trim\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eP8: adjustment +1 Oct. range switch\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eP9: adjustment -1 Oct. range switch\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eP10: temperature VCO heater\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical remarks:\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe core of the A-110-2 is - like the A-110-1 - a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinitely fast but takes a little bit of time the triangle is not perfect ! At the bottom of the waveform it has a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converter. If a perfect triangle is required the A-111-1 is recommended.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe sawtooth output of the A-110-21 has a falling (or negative ) slope. The front panel shows erroneously a rising (or positive) slope. This has no influence to the sound but becomes important when the module is used as an LFO or is mixed with the sawtooth output of another VCO.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eTo obtain also a sine signal the triangle-to-sine converter module A-184-2 is recommended. It includes also a voltage controlled crossfader to fade between two waveforms.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWidth: 8TE \/ 8HP \/ 40.3 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepth: 50 mm (measured from the rear side of the front panel)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCurrent: +12V: 150 mA (heat up period about 30 seconds), 60 mA (long-term current), -12V: 30mA\u003c\/span\u003e\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884387741743,"sku":"","price":161.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a-110-2_f733e39f-1c37-4c85-86e9-fff99d2d08a6.jpg?v=1536180525"},{"product_id":"a-110-4-thru-zero-quadrature-vco","title":"Doepfer - A-110-4: Thru Zero Quadrature VCO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA-110-4 is a so-called Thru Zero Quadrature VCO. The term \"quadrature\" means in this connection that the oscillator outputs sine and cosine waveforms simultaneously. The term \"Thru-Zero\" means that even \"negative\" frequencies are generated. But this a bit a misleading term as negative frequencies do not really exist. \"Negative\" means in this connection simply that the sine\/cosine waves will stop when the linear control voltage reaches 0V and continue with the opposite direction as the linear control voltage becomes negative and vice versa.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe module has two control sections: linear and a exponential. The exponential section consists of the XTune control, the 1V\/Oct input and the XFM input with the corresponding attenuator XFM. The exponential control voltage is the sum of these three voltages. The linear section consists of the LFrq control and the LFM input with the corresponding attenuator LFM. The linear control voltage is the sum of these two voltages. A dual color LED is used to display the polarity of the linear control voltage (red = positive, yellow = negative). The pitch of the sine\/cosine outputs is determined by the control voltages of both sections. The linear section is used to control the pitch in a linear manner. When the LFrq control (LFrq means Linear Frequency Control) is fully CW the module works like a normal Quadrature VCO (e.g. like the A-143-9) and the LED lights red (red = positive). The pitch is then controlled by the exponential section with the manual Tune control XTune and the exponential frequency control inputs 1V\/Oct and XFM. 1V\/Oct is used to control the pitch by a 1V\/Oct CV source (e.g. sequencer or Midi\/USB-to-CV interface). XFM is used to apply an exponential frequency modulation with adjustable depth (e.g. from an LFO or another VCO). As the LFrq control is turned counterclockwise starting from the fully CW position the frequency is lowered in a linear manner until the sine\/cosine waves (nearly) stops at the center position of LFrq (provided that no LFM signal is present). As the LFrq control is moved from the center towards the CCW position the wave starts again but into reverse direction and the LED turns yellow. When the fully CCW position of LFrq is reached the module works again like a normal Quadrature VCO. But much more exciting is the usage of the LFM input to modify the linear control voltage by an external control voltage (typically another sine VCO like a second A-110-4 - but even normal VCOs can be used). Linear modulation by another oscillator using the thru zero feature generates audio spectra than cannot be obtained from an oscillator without the thru zero function. The reason is that a \"normal\" VCO will simply stop as the linear control voltage becomes zero or negative. But a thru zero VCO will start again with \"negative\" frequencies as the the linear control voltage becomes negative.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe main advantage of the A-110-4 compared to other Thru Zero VCOs is that the design uses a sine\/cosine core. The sine\/cosine waves are not derived from other waveforms (e.g. sawtooth or triangle) by means of waveshaping. Rather the sine and cosine waves are the core of the VCO which results in very pure waves with a minimum of distortion and overtones.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe output level is about 3Vpp. Audio examples and oscilloscope pictures will follow soon.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eImportant note: Please remove the bus jumper (JP3 \"BUS CV\") if no CV transmitter is installed on the same bus (e.g. a Midi\/USB-to-CV interface A-190-x or a bus access module A-185-x). The A-110-4 applies a small voltage with high impedance (100k) to the CV line of the bus when the bus CV jumper is installed. This may affect other modules that pick-up CV from the bus (e.g. other VCOs). As soon as a CV transmitter is installed on the same bus the high impedance voltage of the A-110-4 is overwritten and no problem occurs!\u003c\/span\u003e\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884389249071,"sku":"","price":90.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a110-4.jpg?v=1536180586"},{"product_id":"a111-3-micro-precision-vco-vclfo","title":"Doepfer - A-111-3: Micro Precision VCO \/ VCLFO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eModule A-111-3 is an extremely space-saving precision VCO\/LFO with a 4HP panel only. Essentially it's the same basic circuit as the A-111-2 but with reduced features:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003etriangle core\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003efully analog design\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003emin. 15 octaves pitch range in each mode (VCO\/LFO):\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVCO mode: typ. 0.5 Hz - 20 kHz (with appropriate external CV) \u003c\/span\u003e\u003cspan\u003eLFO mode: typ. 0.001 Hz - 40 Hz (with appropriate external CV)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003erange switch so that the module can be used as VCO or LFO (in LFO mode all frequencies about 1\/500 compared to VCO mode) \u003c\/span\u003e\u003cspan\u003eabout 24 octaves total in both modes (typ. 0.001 Hz - 20kHz) \u003c\/span\u003e\u003cspan\u003eperfect 1V\/octave tracking over min. 10 octaves (typ. 16Hz - 16kHz in VCO mode)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eexponential frequency section:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTune control\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eselectable tune control range by means of an internal jumper: about 0.5 \/ 2 \/ 10 octaves \u003c\/span\u003e\u003cspan\u003emanual VCO tune range (with jumper pos. 1, without external CV): about 16 Hz- 20kHz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003emanual VCO tune range (with jumper pos. 2, without external CV): about 16 Hz- 70Hz \u003c\/span\u003e\u003cspan\u003emanual VCO tune range (without jumper, without external CV): about 16 Hz- 22Hz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eif desired the min. frequency can be adjusted by the user (frequency offset trimming potentiometer) \u003c\/span\u003e\u003cspan\u003ethe corresponding frequencies in LFO mode are about 1\/500 lower, the max. frequency in LFO mode is about 40Hz \u003c\/span\u003e\u003cspan\u003e1V\/octave CV input \"1V\" \u003c\/span\u003e\u003cspan\u003eexponential frequency modulation XM input with attenuator \u003c\/span\u003e\u003cspan\u003ethe XM input socket is normalled to a small positive voltage so that the XM control works as fine tune control when exponential FM is not in use. As a logarithmic potentiometer for finer resolution in the lower range is used, also the fine control is exponential \u003c\/span\u003e\u003cspan\u003e(thank's to Václav of Bastl Instruments for this tip at Superbooth in Berlin) \u003c\/span\u003e\u003cspan\u003eaccess to internal bus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003elinear frequency section:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003elinear frequency modulation input LM (without attenuator), DC coupled \u003c\/span\u003e\u003cspan\u003ePulsewidth section for rectangle output:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual pulsewidth control PW, adjusts pulsewidth from 0% (output = fixed at \"low\" state) up to 100% (output fixed at \"high\" state) \u003c\/span\u003e\u003cspan\u003ePulsewidth modulation input PM (without attenuator), about 5Vpp required for full PW range Sync input SY (selectable hard or soft sync via internal jumper)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWaveform outputs:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSawtooth, rising edge, output level ~ 10Vpp (voltage range 0 ... +10V) \u003c\/span\u003e\u003cspan\u003eRectangle (controlled from pulsewidth section), output level ~ 10Vpp (voltage range 0 ... +10V) \u003c\/span\u003e\u003cspan\u003eTriangle, output level ~ 10Vpp (voltage range -5V ... +5V, DC offset can be adjusted also also to 0 ... +10V) \u003c\/span\u003e\u003cspan\u003eNearly \"perfect\" waveforms (no glitches) \u003c\/span\u003e\u003cspan\u003eLED (for display in LFO mode) \u003c\/span\u003e\u003cspan\u003eonly 4HP panel.\u003c\/span\u003e\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884415823919,"sku":"","price":99.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a-111-3.jpg?v=1536180820"},{"product_id":"a-110-1v","title":"Doepfer - A-110-1V: Standard VCO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eModule A-110-1 is a voltage-controlled oscillator. This VCO's frequency range is about eight octaves (ca. 15Hz ... 8kHz). It can produce four waveforms simultaneously: rectangle, sawtooth, triangle, and sine wave (triangle and sine shapes are not perfect, see remark below). The output levels are typically 8Vpp for saw and rectangle, and 10Vpp for triangle and sine. The frequency or pitch of the VCO is determined by the position of the octave (Range) switch and tuning (Tune) knob, and by the voltage present at the CV inputs. Frequency modulation (FM) of the VCO is therefore a possibility. Footage (the octave of the fundamental) is set by the Range control in five steps, and Fine tuning controlled by the Tune knob. The tune knob range is about +\/-1 semitone for older modules. Since about middle of 2015 the value has been increased to about+\/- 1\/2 octave. In the A-110 service manual is described how to modify the range.\u003cbr\u003e\u003cbr\u003eYou can control the pulse width of the square wave either by hand, or by voltage control - Pulse Width Modulation or PWM.\u003cbr\u003e\u003cbr\u003eIn addition the A-110 service manual is available as an example for the A-100 service manual that is available at extra charges. This document describes also how to modify the sensitivity of the tune control (changing the value of the resistor R5), how to re-adjust the 1V\/octave scale and the frequency offset (i.e. the absolute pitch). Such modifications should be carried out by experienced users only !\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical remarks:\u003c\/strong\u003e\u003cbr\u003eThe core of the A-110-1 is a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by internal waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinite fast but takes a little bit of time the derived waveforms triangle and sine are not perfect ! At the top of the waveform they have a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converters. The sine is derived from the triangle by a simple diode-based converter and the sine shape is not perfect (only a rounded triangle). To obtain a nearly perfect sine signal the triangle-to-sine converter module A-184-2 is recommended. It includes also a voltage controlled crossfader to fade between two waveforms.\u003cbr\u003e\u003cbr\u003eIf a perfect triangle is required the A-111-1 or A-111-2 is recommended. For a perfect sine wave the thru zero quadrature VCO A-110-4 or the quadrature LFO\/VCO A-143-9 is recommended.\u003cbr\u003e\u003cbr\u003eThe sawtooth output of the A-110-1 has a falling (or negative) slope as shown on the front panel.\u003cbr\u003e\u003cbr\u003eA simpler VCO (without sine, without rotary switch, but with linear FM input) is the module A-110-2.\u003cbr\u003e\u003cbr\u003eWidth: 10TE \/ 10HP \/ 50.5 mm\u003cbr\u003eDepth: 55 mm (measured from the rear side of the front panel)\u003cbr\u003eCurrent: +90mA (+12V) \/ -20mA (-12V)\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884422705199,"sku":"","price":236.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/A-110-1.jpg?v=1536162954"},{"product_id":"a-110-2v","title":"Doepfer - A-110-2V: Basic VCO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eModule A-110-2 is a low-cost voltage-controlled oscillator. It's a slightly reduced version of the standard VCO A-110-1. Compared to the A-110-1 the A-110-2 has no sine output and the (expensive) octave rotary switch is replaced by a 3-position toggle switch. In return the A-110-2 is equipped with an additional linear FM input and a soft sync input. A jumper is used to select the range of the tune control between about 1\/2 octave and about 4 octaves. The width of the module is only 8 HP compared to the 10 HP of the A-110-1.\u003cbr\u003e\u003cbr\u003eAll other features are essentialy the same as for the A-110-1.\u003cbr\u003e\u003cbr\u003eExplanation of the jumpers and trimming potentiometers:\u003cbr\u003e JP2: CV connection to A-100 bus\u003cbr\u003e JP3: range of Tune control (installed = about 4 octaves, not installed = about 1\/2 octave)\u003cbr\u003e JP4: AC\/DC coupling of the linear FM input (installed = DC coupling, not installed = AC coupling)\u003cbr\u003e P5: 1V\/Oct scale\u003cbr\u003e P6: frequency offset\u003cbr\u003e P7: high-end trim\u003cbr\u003e P8: adjustment +1 Oct. range switch\u003cbr\u003e P9: adjustment -1 Oct. range switch\u003cbr\u003e P10: temperature VCO heater\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical remarks:\u003c\/strong\u003e\u003cbr\u003eThe core of the A-110-2 is - like the A-110-1 - a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinitely fast but takes a little bit of time the triangle is not perfect ! At the bottom of the waveform it has a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converter. If a perfect triangle is required the A-111-1 is recommended.\u003cbr\u003e\u003cbr\u003eThe sawtooth output of the A-110-21 has a falling (or negative ) slope. The front panel shows erroneously a rising (or positive) slope. This has no influence to the sound but becomes important when the module is used as an LFO or is mixed with the sawtooth output of another VCO.\u003cbr\u003e\u003cbr\u003eTo obtain also a sine signal the triangle-to-sine converter module A-184-2 is recommended. It includes also a voltage controlled crossfader to fade between two waveforms.\u003cbr\u003e\u003cbr\u003eWidth: 8TE \/ 8HP \/ 40.3 mm\u003cbr\u003eDepth: 50 mm (measured from the rear side of the front panel)\u003cbr\u003eCurrent: +12V: 150 mA (heat up period about 30 seconds), 60 mA (long-term current), -12V: 30mA\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884422737967,"sku":"","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/A-110-2.jpg?v=1536163002"},{"product_id":"a-111-3v","title":"Doepfer - A-111-3V: Micro Precision VCO \/ VCLFO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eModule A-111-3 is an extremely space-saving precision VCO\/LFO with a 4HP panel only. Essentially it's the same basic circuit as the A-111-2 but with reduced features:\u003cbr\u003e\u003cbr\u003e triangle core\u003cbr\u003e fully analog design\u003cbr\u003e\u003cbr\u003e min. 15 octaves pitch range in each mode (VCO\/LFO):\u003cbr\u003e VCO mode: typ. 0.5 Hz - 20 kHz (with appropriate external CV)\u003cbr\u003e LFO mode: typ. 0.001 Hz - 40 Hz (with appropriate external CV)\u003cbr\u003e\u003cbr\u003e range switch so that the module can be used as VCO or LFO (in LFO mode all frequencies about 1\/500 compared to VCO mode)\u003cbr\u003e about 24 octaves total in both modes (typ. 0.001 Hz - 20kHz)\u003cbr\u003e perfect 1V\/octave tracking over min. 10 octaves (typ. 16Hz - 16kHz in VCO mode)\u003cbr\u003e\u003cbr\u003e exponential frequency section:\u003cbr\u003e Tune control\u003cbr\u003e selectable tune control range by means of an internal jumper: about 0.5 \/ 2 \/ 10 octaves\u003cbr\u003e manual VCO tune range (with jumper pos. 1, without external CV): about 16 Hz- 20kHz\u003cbr\u003e manual VCO tune range (with jumper pos. 2, without external CV): about 16 Hz- 70Hz\u003cbr\u003e manual VCO tune range (without jumper, without external CV): about 16 Hz- 22Hz\u003cbr\u003e if desired the min. frequency can be adjusted by the user (frequency offset trimming potentiometer)\u003cbr\u003e the corresponding frequencies in LFO mode are about 1\/500 lower, the max. frequency in LFO mode is about 40Hz\u003cbr\u003e 1V\/octave CV input \"1V\"\u003cbr\u003e exponential frequency modulation XM input with attenuator\u003cbr\u003e the XM input socket is normalled to a small positive voltage so that the XM control works as fine tune control when exponential FM is not in use. As a logarithmic potentiometer for finer resolution in the lower range is used, also the fine control is exponential \u003cbr\u003e (thank's to Václav of Bastl Instruments for this tip at Superbooth in Berlin)\u003cbr\u003e access to internal bus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003cbr\u003e\u003cbr\u003e linear frequency section:\u003cbr\u003e linear frequency modulation input LM (without attenuator), DC coupled\u003cbr\u003e Pulsewidth section for rectangle output:\u003cbr\u003e Manual pulsewidth control PW, adjusts pulsewidth from 0% (output = fixed at \"low\" state) up to 100% (output fixed at \"high\" state)\u003cbr\u003e Pulsewidth modulation input PM (without attenuator), about 5Vpp required for full PW range Sync input SY (selectable hard or soft sync via internal jumper)\u003cbr\u003e\u003cbr\u003e Waveform outputs:\u003cbr\u003e Sawtooth, rising edge, output level ~ 10Vpp (voltage range 0 ... +10V)\u003cbr\u003e Rectangle (controlled from pulsewidth section), output level ~ 10Vpp (voltage range 0 ... +10V)\u003cbr\u003e Triangle, output level ~ 10Vpp (voltage range -5V ... +5V, DC offset can be adjusted also also to 0 ... +10V)\u003cbr\u003e Nearly \"perfect\" waveforms (no glitches)\u003cbr\u003e LED (for display in LFO mode)\u003cbr\u003e only 4HP panel\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884422770735,"sku":"","price":219.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/A111-3.jpg?v=1536163220"},{"product_id":"a-112v-sampler-wavetable-oscillator","title":"Doepfer - A-112V: Sampler \u0026 Wavetable OSC","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eModule A-112 is the combination of a voltage controlled 8 Bit Sampler and a wavetable oscillator.On top of it the module is able to generate some special effects. A-112 was designed as anadditional sound source with the typical sounds of the early 8 bit samplers and is notcomparable with the modern polyphonic MIDI samplers available on the market.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e\u003cu\u003eSampling mode: \u003c\/u\u003e\u003c\/span\u003e8 bit audio resolution, 128kB memory in 2 banks 64kB each(equivalent to 2 seconds of sampling time for each bank with 32 kHz sampling rate), audioinput with attenuator, overload display in record mode (gate LED), possibility of MIDIDump to store sounds in a computer via MIDI, non volatile memory for the 2 samples in themodule, manual tune control for adjustment of sampling rate for record and play, CV input(~ 1V\/Oct), both manual tune and CV determine the sampling rate respectively the pitch(pitch range is 5 octaves), gate input (not a trigger:the sample starts at the positive edge of the gate signal and is played as long as gate ishigh or until the end of the sample is reached), manual Gate button, non filtered audiooutput (thus quantizing noise can be used as an element of the sound intentionally)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e\u003cu\u003eWavetable mode:\u003c\/u\u003e\u003c\/span\u003e special appearance of the sampling mode when playing a sample, theaudio input is now used as a second control voltage input for moving through the sample in256 byte wide loops (wavetables). The control voltage required to move throughall wavetables applied to the input \"Wave CV In\" is in the range -2.5V(wavetable 1) ... 0V (wavetable 127) ... +2.5V (wavetable 256) when control\"Atten.\" is set fully clockwise. To achieve the typical wavetable oscillator sounds thesampling memory must contain corresponding wavetable data (e.g. loaded via MIDI dump).These data contain a set of wavetables with different harmonic content (e.g. a filtersweep) to get the typical wavetable sound while moving through the tables viaCV. But youmay also use a \"normal\" sample and go through the sample with CV to obtainpartially amazing sounds never heard before. You may use for example sampled speech and gowith CV through the syllables or speech shreds to get really very extreme sounds.An ideal addition for this feature is the Offset\/Attentuator module which can be used to adjust the position of the wavetable (Offset) and themodulation depth (Att.). The corresponding jumper of the has to be set to bipolar offset (as the A-112 requires -2.5V...+2.5V to passthrough all 256 wavetables). As modulation source an LFO (A-145, A-146, A-147,A-143-3), ADSR (A-140, A-141, A-142, A-143-1\/2) or a random voltage (,) may be used. Even a ribbon controller (or ), the Theremin module ,the Joystick or the Wheels module are useful to drive through the wavetables.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e\u003cu\u003eEffects: \u003c\/u\u003e\u003c\/span\u003eAdditionally the module offers - in a way free of charge - some effects likedelay, reverse delay, pitch shiftinng or freeze. But it has to be pointed out that due tothe 8 bit audio resolution these effects are not comparable to high quality effect unitsand should be understand as an extra for nothing. The A-112 is not an effects unit !\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe sampling time of the A-112 is about 1...30 secondscorresponding to a sampling frequency range of about 60kHz...2kHz (64kB@60kHz ~1 s, 64kB@2kHz ~ 30 s).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTechnical note: the module uses a battery for thenon-volatile storage of the sampling data. Batteries have a limited lifespan andhave to be inspected at least every two years.\u003c\/span\u003e\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884440072239,"sku":"","price":220.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a112.jpg?v=1536163321"},{"product_id":"a-110-6","title":"Doepfer - A-110-6: Trapezoid Thru Zero Quadrature VCO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e:\u003c\/p\u003e\n\u003cp\u003eA-110-6 is a Trapezoid Thru Zero Quadrature VCO. The module is based on an idea by Donald Tillman from 2003 but has been revised for the use of modern electronic circuits (no OTAs\/CA3280). Because of it's unique trapezoid core it's totally different compared to other VCOs. But the trapezoid core is not the only specialty: it is also a quadrature VCO and features linear thru zero frequency modulation.\u003cbr\u003e\u003cbr\u003eThe term \"quadrature\" means in this connection that the oscillator outputs two trapezoid waves with 90 degrees phase shift. The same as sine and cosine of a standard quadrature oscillator like the A-110-4 or A-143-9. These waveforms are called TRASIN (trapezoid sine) and TRACOS (trapezoid cosine).\u003cbr\u003e\u003cbr\u003eThe term \"Thru-Zero\" means that even \"negative\" frequencies are generated. But this a bit a misleading term as negative frequencies do not really exist. \"Negative\" means in this connection simply that the TRASIN\/TRACOS waves will stop when the linear control voltage reaches 0V and continue with the opposite directions as the linear control voltage becomes negative and vice versa.The module has two control sections: linear and a exponential. The exponential section consists of the XTune control, the 1V\/Oct input and the XFM input with the corresponding attenuator XFM. The exponential control voltage is the sum of these three voltages. The linear section consists of the LFrq control and the LFM input with the corresponding attenuator LFM. The linear control voltage is the sum of these two voltages. A dual color LED is used to display the polarity of the linear control voltage. The pitch of all outputs is determined by the control voltages of both sections. The linear section is used to control the pitch in a linear manner. When the LFrq control (LFrq means Linear Frequency Control) is fully CW the module works like a normal VCO and the LED lights red. The pitch is then controlled by the exponential section with the manual Tune control XTune and the exponential frequency control inputs 1V\/Oct and XFM. 1V\/Oct is used to control the pitch by a 1V\/Oct CV source (e.g. sequencer or Midi\/USB-to-CV interface). XFM is used to apply an exponential frequency modulation with adjustable depth (e.g. from an LFO or another VCO). As the LFrq control is turned counterclockwise starting from the fully CW position the frequency is lowered in a linear manner until the TRASIN\/TRACOS waves (nearly) stop at the center position of LFrq (provided that no LFM signal is present). As the LFrq control is moved from the center towards the CCW position the waves start again but into reverse direction and the LED turns yellow. When the fully CCW position of LFrq is reached the module works again like a normal VCO. But much more exciting is the usage of the LFM input to modify the linear control voltage by an external control voltage (typically another VCO). Linear modulation by another oscillator using the thru zero feature in combination with the trapezoid waveforms generates audio spectra than cannot be obtained from any other oscillator without the thru zero function. The reason is that a \"normal\" VCO will simply stop as the linear control voltage becomes zero or negative. But a thru zero VCO will start again with \"negative\" frequencies as the the linear control voltage becomes negative.\u003cbr\u003e\u003cbr\u003eOther waveforms like triangle, sawtooth, rectangle and sine can be obtained from the TRASIN\/TRACOS signals (triangle e.g. simply by subtracting TRISIN and TRICOS, SAWSIN and SAWCOS by switching the other waveforms). All five waveforms are available as quadrature pairs (i.e. with 90 degrees phase shift):\u003cbr\u003e\u003cbr\u003e Trapezoid (TRASIN + TRACOS)\u003cbr\u003e\u003cbr\u003e Triangle (TRISIN + TRICOS)\u003cbr\u003e\u003cbr\u003e Sinus (SIN + COS)\u003cbr\u003e\u003cbr\u003e Rectangle (RECSIN + RECCOS)\u003cbr\u003e\u003cbr\u003e Sawtooth (SAWSIN + SAWCOS)\u003cbr\u003e\u003cbr\u003eBy means\u003cbr\u003e\u003cbr\u003e of a toggle switch the frequency range can be selected between VCO (audio range) and LFO. In LFO range the frequencies are about 1\/100 compared to VCO mode.\u003cbr\u003e\u003cbr\u003eA dual-color LED display the polarity of the linear control section.Another dual-color LED shows the signal TRASIN which is helpful in LFO mode.\u003cbr\u003e\u003cbr\u003eTechnical note regarding linear FM: The LFM CV input is DC coupled. If the input is used for linear FM in audio range and the signal applied to this input has a DC offset it will cause a small pitch shift that depends upon the value of the DC voltage. Especially when a VCA is used to change dynamically the level of the modulation signal this may generate a pitch shift caused by the control voltage feedthrough of the VCA. The control voltage feedthrough adds a DC voltage at the output which depends upon the control voltage of the VCA. For this application VCAs with a very low CV feedthough should be used or the signal output of the VCA should be AC coupled to the LFM input of the A-110-6 (e.g. by inserting a capacitor).\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884440530991,"sku":"","price":165.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a-110-6.jpg?v=1536180618"},{"product_id":"a-111-2v","title":"Doepfer - A-111-2V: High End VCO II \/ VCLFO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eModule A-111-2 is the successor of the obsolete High End VCO I A-111-1.\u003cbr\u003e\u003cbr\u003eHere are the most important features of the planned module:\u003cbr\u003e\u003cbr\u003e triangle core\u003cbr\u003e fully analog design\u003cbr\u003e min. 15 octaves pitch range (typ. 0.5Hz - 20kHz in VCO mode \/ 0.001Hz - 40Hz in LFO mode)\u003cbr\u003e perfect 1V\/octave tracking over min. 10 octaves (typ. 20Hz - 20kHz)\u003cbr\u003e exponential frequency controls and inputs:\u003cbr\u003e Tune (about +\/- 1 octave range)\u003cbr\u003e Fine (about +\/- 1 semitone range)\u003cbr\u003e Octave (range switch with 6 positions)\u003cbr\u003e 1V\/octave CV input\u003cbr\u003e XFM input with attenuator\u003cbr\u003e access to internal bus CV (via jumper, optional, please remove the bus jumper if this \u003cbr\u003efeature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003cbr\u003e linear frequency controls and inputs:\u003cbr\u003e LF (manual linear frequency control: fully CW = standard setting for usual VCO applications, fully CCW: close to 0Hz frequency)\u003cbr\u003e works also as a kind of range control for the exponential section LFM input with attenuator, DC coupled\u003cbr\u003e Pulsewidth controls and inputs (for rectangle output):\u003cbr\u003e PW (manual pulsewidth control from 0%\/output = fixed at \"low\" state up to 100% \/ output fixed at \"high\" state)\u003cbr\u003e PWM input with attenuator\u003cbr\u003e Hard Sync input (CEM3340 hard sync type)\u003cbr\u003e Soft Sync input\u003cbr\u003e Waveform outputs:\u003cbr\u003e Sawtooth\u003cbr\u003e Rectangle (controlled from pulsewidth section)\u003cbr\u003e Triangle\u003cbr\u003e Sine\u003cbr\u003e Range switch to select VCO\/VCLFO mode, frequency relation between VCO mode and LFO mode about 1:500\u003cbr\u003e dual color LED display (to display low frequencies below ~ 25 Hz)\u003cbr\u003e Nearly \"perfect\" waveforms\u003cbr\u003e high end triangle to sine converter with excellent sine waveshape (thank's to Tim Stinchcombe who recommended this circuit)\u003cbr\u003e the micro precision VCO A-111-3 uses the same VCO core as the A-111-2, but has less inputs, outputs and controls\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":8884440629295,"sku":"","price":340.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/A-111-2_a2ce8b7f-3b57-4ec9-a448-d3d126882636.jpg?v=1536163053"},{"product_id":"doepfer-a-111-4","title":"Doepfer - A-111-4: Quad Precision VCO","description":"\u003cp\u003e\u003cstrong\u003e Manufacturer Description:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA-111-4 contains four precision VCOs and has individual controls, inputs and outputs for each VCO available as well as a common control and output unit. After all the A-111-4 is very similar to four A-111-3 without LFO mode but built in output mixers for the three waveforms, and a master unit for all four VCOs.\u003cbr\u003e\u003cbr\u003eControls, inputs and outputs for each of the four VCOs:\u003cbr\u003e1V\/Octave CV input\u003cbr\u003eOctave switch (+1 \/ 0 \/ -1 octave)\u003cbr\u003eTune control (range internally adjustable by jumpers: ~ 2 semitones \/ ~ 1 octave \/ ~ 4 octaves)\u003cbr\u003eModulation CV input\u003cbr\u003eModulation destination:\u003cbr\u003eupper position: exponential frequency modulation (XM)\u003cbr\u003elower position: linear frequency modulation (LM) or pulsewidth modulation of the rectangle (PM), selectable via internal jumper\u003cbr\u003e\u003cbr\u003eFrequency Modulation (FM) or Pulsewidth Modulation of the rectangle (PWM)\u003cbr\u003eModulation intensity\u003cbr\u003eTriangle output\u003cbr\u003eSawtooth output\u003cbr\u003eRectangle output (about 50% without external PWM)\u003cbr\u003eSync input (hard or soft sync internally selectable via jumper, CEM3340 hard sync type)\u003cbr\u003emin. 10 octaves range (with appropriate external CV)\u003cbr\u003eCEM3340 based VCO (triangle core)\u003cbr\u003eeach VCO has it's own separate internal +\/- power supply for each for best stability and the prevention of unwanted synchronisation of the VCOs\u003cbr\u003e\u003cbr\u003eControls, inputs and outputs of the master section:\u003cbr\u003e1V\/Octave CV input\u003cbr\u003eOctave switch (+1 \/ 0 \/ -1 octave)\u003cbr\u003eTune control (range internally adjustable by jumpers: 2 semitones \/ 1 octave \/ 4 octaves)\u003cbr\u003eFrequency Modulation CV input (FM)\u003cbr\u003eFM intensity\u003cbr\u003eTriangle sum output\u003cbr\u003eSawtooth sum output\u003cbr\u003eRectangle sum output\u003cbr\u003eas soon as the single waveform output of a VCO is patched this waveform of the VCO in question is removed from the sum (this function can be turned off for each single output socket by means of solder brigdes on the pc board, i.e. the sum contains then all signals independent of the patching of the single output)\u003cbr\u003eCV output (outputs the sum CV that is used to control all four VCOs)\u003cbr\u003ebus CV (selectable via jumper)\u003cbr\u003e\u003cbr\u003eTypical applications:\u003cbr\u003efat sounding monophonic VCO with the possibility to adjust any intervals paraphonic patches in combination with the polyphonic CV interface A-190-5 (all four VCOs processed by one VCF\/VCA) full polyphonic patches in combination with the polyphonic CV interface A-190-5 and four complete VCF\/VCA sections complex VCO patches with up to four VCOs by means of the frequency modulation features (exponential an linear) and the sync functions. The following document shows the positions and functions of the jumpers and trimming potentiometers of the module:\u003cbr\u003ePay attention that faulty adjustments caused by the user are not covered by warranty. In this case the working time required to re-establish the correct adjustment has to be charged. This warning does not apply to the change of the jumper positions. \u003cbr\u003e\u003cbr\u003eTechnical remarks:\u003cbr\u003eThe module is based on the CEM3340 circuit. The hard sync of the CEM3340 works different compared to most other VCOs.\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":9011003392047,"sku":"","price":506.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a-111-4.jpg?v=1536180881"},{"product_id":"doepfer-a-111-2-high-end-vco-ii-vclfo","title":"Doepfer - A-111-2: High End VCO II \/ VCLFO","description":"\u003cp\u003e\u003cb\u003eManufacturer Description\u003c\/b\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eModule A-111-2 is the successor of the obsolete High End VCO I A-111-1.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eHere are the most important features of the planned module:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003etriangle core \u003c\/span\u003e\u003cspan\u003efully analog design \u003c\/span\u003e\u003cspan\u003emin. 15 octaves pitch range (typ. 0.5Hz - 20kHz in VCO mode \/ 0.001Hz - 40Hz in LFO mode) \u003c\/span\u003e\u003cspan\u003eperfect 1V\/octave tracking over min. 10 octaves (typ. 20Hz - 20kHz)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eExponential frequency controls and inputs:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTune (about +\/- 1 octave range)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFine (about +\/- 1 semitone range)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOctave (range switch with 6 positions)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e1V\/octave CV input\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eXFM input with attenuator\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eaccess to internal bus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003elinear frequency controls and inputs:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLF (manual linear frequency control: fully CW = standard setting for usual VCO applications, fully CCW: close to 0Hz frequency) \u003c\/span\u003e\u003cspan\u003eworks also as a kind of range control for the exponential section \u003c\/span\u003e\u003cspan\u003eLFM input with attenuator, DC coupled\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003ePulsewidth controls and inputs (for rectangle output):\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePW (manual pulsewidth control from 0%\/output = fixed at \"low\" state up to 100% \/ output fixed at \"high\" state) \u003c\/span\u003e\u003cspan\u003ePWM input with attenuator\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eHard Sync input\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSoft Sync input\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWaveform outputs:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSawtooth\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRectangle (controlled from pulsewidth section)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTriangle\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSine\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eRange switch to select VCO\/VCLFO mode, frequency relation between VCO mode and LFO mode about 1:500 \u003c\/span\u003e\u003cspan\u003edual color LED display (to display low frequencies below ~ 25 Hz)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNearly \"perfect\" waveforms (no glitches) \u003c\/span\u003e\u003cspan\u003ehigh end triangle to sine converter with excellent sine waveshape (thank's to Tim Stinchcombe who recommended this circuit) \u003c\/span\u003e\u003cspan\u003ethe micro precision VCO A-111-3 uses the same VCO core as the A-111-2, but has less inputs, outputs and controls.\u003c\/span\u003e\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":9069901774895,"sku":"","price":317.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/a-111-2.jpg?v=1536180715"},{"product_id":"doepfer-a-111-4v","title":"Doepfer - A-111-4V","description":"\u003cp\u003eA-111-4 contains four precision VCOs and has individual controls, inputs and outputs for each VCO available as well as a common control and output unit. After all the A-111-4 is very similar to four A-111-3 without LFO mode but built in output mixers for the three waveforms, and a master unit for all four VCOs.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eControls, inputs and outputs for each of the four VCOs: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1V\/Octave CV input\u003c\/li\u003e\n\u003cli\u003eOctave switch (+1 \/ 0 \/ -1 octave)\u003c\/li\u003e\n\u003cli\u003eTune control (range internally adjustable by jumpers: ~ 2 semitones \/ ~ 1 octave \/ ~ 4 octaves)  \u003c\/li\u003e\n\u003cli\u003eModulation CV input\u003c\/li\u003e\n\u003cli\u003eModulation destination:\n\u003cul\u003e\n\u003cli\u003eupper position: exponential frequency modulation (XM)\u003c\/li\u003e\n\u003cli\u003elower position: linear  frequency modulation (LM) \u003cu\u003eor\u003c\/u\u003e pulsewidth modulation of the rectangle (PM), selectable via internal jumper\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e Frequency Modulation (FM) or Pulsewidth Modulation of the rectangle (PWM)\u003c\/li\u003e\n\u003cli\u003eModulation intensity\u003c\/li\u003e\n\u003cli\u003eTriangle output\u003c\/li\u003e\n\u003cli\u003eSawtooth output\u003c\/li\u003e\n\u003cli\u003eRectangle output (about 50% without external PWM)\u003c\/li\u003e\n\u003cli\u003eSync input (hard or soft sync internally selectable via jumper, CEM3340 hard sync type)\u003c\/li\u003e\n\u003cli\u003emin. 10 octaves range (with appropriate external CV)\u003c\/li\u003e\n\u003cli\u003eCEM3340 based VCO (triangle core)\u003c\/li\u003e\n\u003cli\u003eeach VCO has it's own separate internal +\/- power supply for each for best stability and the prevention of unwanted synchronisation of the VCOs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eControls, inputs and outputs of the master section:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1V\/Octave CV input\u003c\/li\u003e\n\u003cli\u003eOctave switch (+1 \/ 0 \/ -1 octave)\u003c\/li\u003e\n\u003cli\u003eTune control (range internally adjustable by jumpers: 2 semitones \/ 1 octave \/ 4 octaves)  \u003c\/li\u003e\n\u003cli\u003eFrequency Modulation CV input (FM)\u003c\/li\u003e\n\u003cli\u003eFM intensity\u003c\/li\u003e\n\u003cli\u003eTriangle sum output\u003c\/li\u003e\n\u003cli\u003eSawtooth sum output\u003c\/li\u003e\n\u003cli\u003eRectangle sum output\u003c\/li\u003e\n\u003cli\u003eas soon as the single waveform output of a VCO is patched this waveform of the VCO in question is removed from the sum (this function can be turned off for each single output socket by means of solder brigdes on the pc board, i.e. the sum contains then all signals independent of the patching of the single output)\u003c\/li\u003e\n\u003cli\u003eCV output (outputs the sum CV that is used to control all four VCOs)\u003c\/li\u003e\n\u003cli\u003ebus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cu\u003eTechnical remarks:\u003cbr\u003e \u003c\/u\u003e\u003cbr\u003e The module is based on the CEM3340 circuit. The hard sync of the CEM3340 works different compared to most other VCOs.\u003c\/p\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":31151370240064,"sku":"","price":529.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/doepfer_A-111-4V_frontal.jpg?v=1573521384"},{"product_id":"doepfer-a-111-6-mini-synth-voice","title":"Doepfer - A-111-6","description":"\u003cp\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/1d2kuwEN4iU\" title=\"YouTube video player\" width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e\u003cspan\u003eModule A-111-6 is a complete miniature monophonic synthesizer module that has these features available:\u003cbr\u003e( \u003cb\u003ebold\u003c\/b\u003e = control or socket)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eVCO\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003etriangle core VCO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003efrequency range: about 32 Hz ... 16 kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eprecise 1V \/ oct tracking: about 32 Hz ... 4 kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eTune:\u003c\/b\u003e manual tune control (with an internal jumper the range can be set to ~ +\/- 1 half an octave or ~ +\/- 2.5 octaves)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eOct. \u003c\/b\u003e: range switch -1 \/ 0 \/ +1 octave\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eMod\u003c\/b\u003e .: Modulation depth (attenuator wired to the \u003cb\u003eMod.\u003c\/b\u003e Socket)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eDest\u003c\/b\u003e .: Switch that is used to address the modulation to frequency modulation (position \u003cb\u003eFM\u003c\/b\u003e ) or pulsewidth modulation (positon \u003cb\u003ePM\u003c\/b\u003e ), in center positon no modulation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003ePW:\u003c\/b\u003e manual pulsewidth control for rectangle waveform, PW can be also modulated by the Mod. Input as mentioned above\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eWave\u003c\/b\u003e : waveform switch (sawtooth \/ off \/ triangle), the sum of the waveform chosen by this switch and the rectangle is fed into the VCF (to turn the rectangle off the PW control has to be set fully CCW or fully CW)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003e1V \/ Oct. \u003c\/b\u003e(socket): external CV input for VCO frequency (1V \/ octave)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eaccess to internal bus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eBalance unit\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe balance unit is made of two VCAs which are controlled by the sum of manual balance control and the balance CV input in the opposite direction.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe audio input of VCA1 is hard-wired to the VCO output, audio input 2 is connected to the socket Ext.In.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe output of the balance unit is used as audio input for the VCF\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eBal .:\u003c\/b\u003e manual balance control, fully CCW the internal VCO is used, fully CW the external signal (Ext.In) is used,\u003c\/span\u003e\u003cspan\u003e at center position both signals have about the same level\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eCV Bal. \u003c\/b\u003e: CV input for balance (range about 0 ... + 5V)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eExt. In\u003c\/b\u003e : external audio input for VCA2, about\u003c\/span\u003e\u003cspan\u003e 5 Vpp level required for similar loudness as the internal VCO\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ethis socket is normalled to the internal \u003cb\u003eVCO suboctave f \/ 2\u003c\/b\u003e signal (rectangle with half the frequency), if no external signal is applied the suboctave signal is used as the second signal for the balance unit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eVCF\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e24 dB low pass\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eFrq. \u003c\/b\u003e: manual frequency control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eFM1\u003c\/b\u003e : frequency modulation depth (attenuator wired to the \u003cb\u003eVCF FM1\u003c\/b\u003e socket, the socket FM1 is normalled to the internal \u003cb\u003eenvelope\u003c\/b\u003e signal and then FM1 controls the modulation depth of the internal envelope applied to the filter)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eFM2\u003c\/b\u003e (socket): second CV input for VCF without attenuator (about 1V \/ octave), the socket FM2 can be normalled to the 1V \/ Oct socket of the VCO by means of an internal jumper, in this case the VCF frequency follows the VCO frequency (so-called\u003c\/span\u003e VCF tracking)\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eRes\u003c\/b\u003e .: Manual resonance control (up to self oscillation)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eif the VCO is turned off (waveform switch = center position, pulsewidth control = fully CCW or CW) and the VCF resonance is set to maximum the module can be used as a sine oscillator, the tracking at socket VCF FM2 is about 1V \/ octave (not as precise as the VCO but much better than most other filters)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e~ 11 octaves frequency range (~ 10 Hz ... 20kHz)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eaccess to internal bus CV for bus controlled VCF tracking (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eVCA\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eGain\u003c\/b\u003e : manual amplitude control (initial gain), can be used to open the VCA without envelope signal\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eVCA\u003c\/b\u003e (switch): used to switch between gate and envelope as control signal for the VCA, in center position the VCA is not controlled by envelope or gate, in this case the VCA loudness is controlled only by the manual gain control\u003cbr\u003enote: when gate is used the VCA is controlled directly by the gate signal (ie hard on \/ off), this may lead to clicking noise under certan conditions (especially with low VCO \/ VCF frequencies), an\u003c\/span\u003e\u003cspan\u003e additional jumper is available that adds a bit slew to the gate signal when it is used to control the VCA directly, this avoids the mentioned clicks but lowers the rise and fall time of the gate signal (affects only the internal gate signal processing and has no influence to the applied external gat signal)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003especial control scale: exponential scale in the range from about -20dB to -80 \/ 90dB, linear scale from about -20dB to 0dB\u003cbr\u003e\u003ci\u003eRemark\u003c\/i\u003e : this special control scale results in a loudness behavior that is a bit different from pure linear or exponential VCAs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eOut\u003c\/b\u003e : audio output of the module (= VCA output)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eenvelope\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eGate\u003c\/b\u003e (socket): Gate input (min. + 5V), can be normalized to the bus gate signal by means of a jumper\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eAtt\u003c\/b\u003e : manual control for attack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eD \/ R\u003c\/b\u003e : manual control for decay \/ release\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eEnv. \u003c\/b\u003e(switch): used to switch between A \/ D, ADSR and A \/ R mode of the envelope generator, in center position (ADSR) the sustain level is fixed to about 50%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eEnvelope\u003c\/b\u003e (socket): envelope output (about + 10V)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eCVT\u003c\/b\u003e (socket): CV input for time control, by means of two internal jumpers one can select which time parameters are controlled by the CVT input (eg A only or D \/ R only or A \/ D \/ R) and in which direction ( ie if an increasing CVT shortens or stretches the time parameter in question)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnvelope LED display\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAttack time range: ~ 1ms ... 5 sec (can be extended by using the CVT input)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDecay \/ Release time range: ~ 1ms ... 15 sec (can be extended by using the CVT input)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":31404079317056,"sku":"","price":271.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/1001882_1.jpg?v=1649271699"},{"product_id":"doepfer-a-111-6v-mini-synth-voice-vintage-edition","title":"Doepfer - A-111-6V","description":"\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/1d2kuwEN4iU\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003cspan\u003eModule A-111-6 is a complete miniature monophonic synthesizer module that has these features available:\u003cbr\u003e( \u003cb\u003ebold\u003c\/b\u003e = control or socket)\u003c\/span\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eVCO\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003etriangle core VCO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003efrequency range: about 32 Hz ... 16 kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eprecise 1V \/ oct tracking: about 32 Hz ... 4 kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eTune:\u003c\/b\u003e manual tune control (with an internal jumper the range can be set to ~ +\/- 1 half an octave or ~ +\/- 2.5 octaves)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eOct. \u003c\/b\u003e: range switch -1 \/ 0 \/ +1 octave\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eMod\u003c\/b\u003e .: Modulation depth (attenuator wired to the \u003cb\u003eMod.\u003c\/b\u003e Socket)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eDest\u003c\/b\u003e .: Switch that is used to address the modulation to frequency modulation (position \u003cb\u003eFM\u003c\/b\u003e ) or pulsewidth modulation (positon \u003cb\u003ePM\u003c\/b\u003e ), in center positon no modulation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003ePW:\u003c\/b\u003e manual pulsewidth control for rectangle waveform, PW can be also modulated by the Mod. Input as mentioned above\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eWave\u003c\/b\u003e : waveform switch (sawtooth \/ off \/ triangle), the sum of the waveform chosen by this switch and the rectangle is fed into the VCF (to turn the rectangle off the PW control has to be set fully CCW or fully CW)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003e1V \/ Oct. \u003c\/b\u003e(socket): external CV input for VCO frequency (1V \/ octave)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eaccess to internal bus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eBalance unit\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe balance unit is made of two VCAs which are controlled by the sum of manual balance control and the balance CV input in the opposite direction.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe audio input of VCA1 is hard-wired to the VCO output, audio input 2 is connected to the socket Ext.In.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe output of the balance unit is used as audio input for the VCF\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eBal .:\u003c\/b\u003e manual balance control, fully CCW the internal VCO is used, fully CW the external signal (Ext.In) is used,\u003c\/span\u003e\u003cspan\u003e at center position both signals have about the same level\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eCV Bal. \u003c\/b\u003e: CV input for balance (range about 0 ... + 5V)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eExt. In\u003c\/b\u003e : external audio input for VCA2, about\u003c\/span\u003e\u003cspan\u003e 5 Vpp level required for similar loudness as the internal VCO\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ethis socket is normalled to the internal \u003cb\u003eVCO suboctave f \/ 2\u003c\/b\u003e signal (rectangle with half the frequency), if no external signal is applied the suboctave signal is used as the second signal for the balance unit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eVCF\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e24 dB low pass\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eFrq. \u003c\/b\u003e: manual frequency control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eFM1\u003c\/b\u003e : frequency modulation depth (attenuator wired to the \u003cb\u003eVCF FM1\u003c\/b\u003e socket, the socket FM1 is normalled to the internal \u003cb\u003eenvelope\u003c\/b\u003e signal and then FM1 controls the modulation depth of the internal envelope applied to the filter)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eFM2\u003c\/b\u003e (socket): second CV input for VCF without attenuator (about 1V \/ octave), the socket FM2 can be normalled to the 1V \/ Oct socket of the VCO by means of an internal jumper, in this case the VCF frequency follows the VCO frequency (so-called\u003c\/span\u003e VCF tracking)\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eRes\u003c\/b\u003e .: Manual resonance control (up to self oscillation)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eif the VCO is turned off (waveform switch = center position, pulsewidth control = fully CCW or CW) and the VCF resonance is set to maximum the module can be used as a sine oscillator, the tracking at socket VCF FM2 is about 1V \/ octave (not as precise as the VCO but much better than most other filters)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e~ 11 octaves frequency range (~ 10 Hz ... 20kHz)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eaccess to internal bus CV for bus controlled VCF tracking (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eVCA\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eGain\u003c\/b\u003e : manual amplitude control (initial gain), can be used to open the VCA without envelope signal\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cb\u003eVCA\u003c\/b\u003e (switch): used to switch between gate and envelope as control signal for the VCA, in center position the VCA is not controlled by envelope or gate, in this case the VCA loudness is controlled only by the manual gain control\u003cbr\u003enote: when gate is used the VCA is controlled directly by the gate signal (ie hard on \/ off), this may lead to clicking noise under certan conditions (especially with low VCO \/ VCF frequencies), an\u003c\/span\u003e\u003cspan\u003e additional jumper is available that adds a bit slew to the gate signal when it is used to control the VCA directly, this avoids the mentioned clicks but lowers the rise and fall time of the gate signal (affects only the internal gate signal processing and has no influence to the applied external gat signal)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003especial control scale: exponential scale in the range from about -20dB to -80 \/ 90dB, linear scale from about -20dB to 0dB\u003cbr\u003e\u003ci\u003eRemark\u003c\/i\u003e : this special control scale results in a loudness behavior that is a bit different from pure linear or exponential VCAs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eOut\u003c\/b\u003e : audio output of the module (= VCA output)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eenvelope\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eGate\u003c\/b\u003e (socket): Gate input (min. + 5V), can be normalized to the bus gate signal by means of a jumper\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eAtt\u003c\/b\u003e : manual control for attack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eD \/ R\u003c\/b\u003e : manual control for decay \/ release\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eEnv. \u003c\/b\u003e(switch): used to switch between A \/ D, ADSR and A \/ R mode of the envelope generator, in center position (ADSR) the sustain level is fixed to about 50%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eEnvelope\u003c\/b\u003e (socket): envelope output (about + 10V)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cb\u003eCVT\u003c\/b\u003e (socket): CV input for time control, by means of two internal jumpers one can select which time parameters are controlled by the CVT input (eg A only or D \/ R only or A \/ D \/ R) and in which direction ( ie if an increasing CVT shortens or stretches the time parameter in question)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnvelope LED display\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAttack time range: ~ 1ms ... 5 sec (can be extended by using the CVT input)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDecay \/ Release time range: ~ 1ms ... 15 sec (can be extended by using the CVT input)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":31404079611968,"sku":"","price":282.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/1001943_1.jpg?v=1649272724"},{"product_id":"doepfer-a-111-5-synthesizer-voice","title":"Doepfer - A-111-5 Mini Synthesizer Voice","description":"\u003cp data-mce-fragment=\"1\"\u003eThe A-111-5V is a monophonic synthesizer voice in Eurorack format. The entire sound generation and all modulation sources are 100% analog. Basically it is a Dark Energy without cabinet and MIDI\/CV interface.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe A-111-5 is equipped with an analog VCO with PWM, a low pass filter with linear (!) frequency modulation for great FM sounds. The VCA can be opened manually to let sounds through even when no key is pressed. This is handy if you want to use the A-111-5 as a filter. The modulation section consists of an ADSR envelope and 2 LFOs with switchable frequency ranges up to audio speeds.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr class=\"line\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePower consumption: 80mA at +12V and 50mA at -12V\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDepth: 40mm\u003c\/p\u003e\nHP : 24\u003chr class=\"line\" data-mce-fragment=\"1\"\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":37452459344042,"sku":"","price":374.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/A-111-5.jpg?v=1604608882"},{"product_id":"doepfer-a-111-5v","title":"Doepfer - A-111-5V Mini Synthesizer Voice","description":"\u003cp data-mce-fragment=\"1\"\u003eThe A-111-5V is a monophonic synthesizer voice in Eurorack format. The entire sound generation and all modulation sources are 100% analog. Basically it is a Dark Energy without cabinet and MIDI\/CV interface.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe A-111-5 is equipped with an analog VCO with PWM, a low pass filter with linear (!) frequency modulation for great FM sounds. The VCA can be opened manually to let sounds through even when no key is pressed. This is handy if you want to use the A-111-5 as a filter. The modulation section consists of an ADSR envelope and 2 LFOs with switchable frequency ranges up to audio speeds.\u003c\/p\u003e\n\u003chr class=\"line\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePower consumption: 80mA at +12V and 50mA at -12V\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDepth: 40mm\u003c\/p\u003e\nHP : 24","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":37452535890090,"sku":"","price":432.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0020\/5199\/7743\/products\/A-111-5v.jpg?v=1604609779"}],"url":"https:\/\/www.noisebug.live\/collections\/doepfer-oscillators.oembed","provider":"Noisebug","version":"1.0","type":"link"}