{"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 \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":54725909643605,"sku":null,"price":226.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/1872\/3413\/files\/a-111-4.jpg?v=1787442254","url":"https:\/\/climivor.myshopify.com\/products\/doepfer-a-111-4","provider":"CLIMIVOR","version":"1.0","type":"link"}