Doepfer A-110 Standard VCO

Doepfer A-110 Standard VCO


$187.9 Buy It Now or Best Offer
free,30-Day Returns





Seller Store rubadub
(37531) 99.5%,

Location: Glasgow
Ships to: US,
Item: 335371032970

Return postage will be paid by:Buyer
Returns Accepted:Returns Accepted
After receiving the item, your buyer should cancel the purchase within:30 days
Doepfer:Doepfer
Colour:Silver
Compatible Brand:Universal
Compatible Model:Universal
Compatible Product Line:Universal
Item Weight:450
Type:Eurorack
Unit Quantity:1
Unit Type:Unit

Doepfer A-110 Standard VCO p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial; color: #000000; -webkit-text-stroke: #000000; background-color: #ffffff} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial; color: #000000; -webkit-text-stroke: #000000; background-color: #ffffff; min-height: 16.0px} p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial; color: #000000; -webkit-text-stroke: #262626; background-color: #ffffff} span.s1 {font-kerning: none} span.s2 {font-kerning: none; -webkit-text-stroke: 0px #0000e9} span.s3 {text-decoration: underline ; font-kerning: none; -webkit-text-stroke: 0px #0000e9} VOLTAGE CONTROLLED OSCILLATOR WITH LINEAR FM, AC/DC/ SOFTSYNC Module 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. You can control the pulse width of the square wave either by hand, or by voltage control – Pulse Width Modulation or PWM. Socket CV1 is normalled to the internal control voltage coming from the bus (interruptible by removing the jumper labelled “INT.CV”, located next to the bus connector). Plugging a patch cable into the socket CV1 does interrupt the internal bus CV connection ! Other VCO modules may behave different in this regard (e.g. adding the internal bus CV to the CV applied to the socket at the front panel). The 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. If a perfect triangle is required the A-111-2 or A-111-3 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. The sawtooth output of the A-110-1 has a falling (or negative) slope as shown on the front panel. The rotary switch used for “Range” has 10 positions. But only the positions marked at the front panel (-2 … +2) should be used. Unfortunately the rotary switch cannot be limited mechanically to 5 positions only. Specifications: 90 mA +12V20 mA -12V0 mA 5VWidth: 10HPDepth: 55mm RETURNSThe majority of items that we sell are covered by the Distance Selling Regulations in the UK which gives you 30 working days from receipt of the goods to cancel the contract and return them. There are some items which are not covered by the DSR’s including Software and Hardware that includes Software needed for it’s operation and Music items (Records, CD’s DVD’s and so on), (mainly in ear headphones and microphones).If you do wish to return an item then please contact us and we’ll give you the relevant information – buyers are responsible for the cost of shipping items back to us and also for ensuring they arrive back to us in good condition. If the returned items arrive back to us in a damaged state, or the product’s original box/packaging is damaged, we reserve the right to deduct an amount from the refund in order to compensate for the damage. This amount will be decided by our staff after inspection of the items.If you have received an item and it is faulty then please get in touch straight away. We will do our utmost to sort out any problem quickly and to your satisfaction.Where items are faulty within 7 days from date of purchase, they will be classed as an out of box failure. These items will be collected, and replaced with an identical product (subject to availability of stock).We may ask you to post small, low cost items, such as headphones, back to us.Any items over 30 days old will need to be returned to either our service department, the manufacturer or their appointed agent for warranty repair. We will always advise you of the return address details that you should send the goods to where this is not our normal returns address. VOLTAGE CONTROLLED OSCILLATOR WITH LINEAR FM, AC/DC/ SOFTSYNC Module 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. You can control the pulse width of the square wave either by hand, or by voltage control – Pulse Width Modulation or PWM. Socket CV1 is normalled to the internal control voltage coming from the bus (interruptible by removing the jumper labelled “INT.CV”, located next to the bus connector). Plugging a patch cable into the socket CV1 does interrupt the internal bus CV connection ! Other VCO modules may behave different in this regard (e.g. adding the internal bus CV to the CV applied to the socket at the front panel). The 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 causéd 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. If a perfect triangle is required the A-111-2 or A-111-3 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. The sawtooth output of the A-110-1 has a falling (or negative) slope as shown on the front panel. The rotary switch uséd for “Range” has 10 positions. But only the positions marked at the front panel (-2 … +2) should be uséd. Unfortunately the rotary switch cannot be limited mechanically to 5 positions only. Specifications: 90 mA +12V20 mA -12V0 mA 5VWidth: 10HPDepth: 55mm RETURNS The majority of items that we sell are covered by the Distance Selling Regulations in the UK which gives you 30 working days from receipt of the goods to cancel the contract and return them. There are some items which are not covered by the DSR’s including Software and Hardware that includes Software needed for it’s operation and Music items (Records, CD’s DVD’s and so on), (mainly in ear headphones and microphones). If you do wish to return an item then please contact us and we’ll give you the relevant information – buyers are responsible for the cost of shipping items back to us and also for ensuring they arrive back to us in good condition. If the returned items arrive back to us in a damaged state, or the product’s original box/packaging is damaged, we reserve the right to deduct an amount from the refund in order to compensate for the damage. This amount will be decided by our staff after inspection of the items. If you have received an item and it is faulty then please get in touch straight away. We will do our utmost to sort out any problem quickly and to your satisfaction. Where items are faulty within 7 days from date of purchase, they will be classed as an out of box failure. These items will be collected, and replaced with an identical product (subject to availability of stock). We may ask you to post small, low cost items, such as headphones, back to us. Any items over 30 days old will need to be returned to either our service department, the manufacturer or their appointed agent for warranty repair. We will always advise you of the return address details that you should send the goods to where this is not our normal returns address.eBay integration by

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