SergeVCS
From Diy
Contents |
About
I was able to gain access to a PCB pair of the licensed Serge VCS from bananalogue. I did modify the circuitry to work with MOTM, also i used other potentiometers and panel jacks as the Original while keeping all three PCB together.
The VCS is a unity gain voltage follower. The rising and falling slopes are independently and jointly voltage controllable over a wide range.
Panel
I try to keep the original "spirit" of the VCS design while adopting this in MOTM. Panel file is available on request.
Status
fully working (again) , needed to replace all IC's as i did a wiring error on the power supply a while ago.
Bugfix
On my board, there was a PCB error, hence some operation was incorrect. The fix was published in E-M Forum. See also the Thumbnail on the right side labeled "Bugfix"
Documentation / Patch Sound Examples
(Description taken from bananalogue.com)
VC Transient Envelope Generator
A pulse at the trigger input will start the envelope, or a gate input will sustain the level and the envelope will fall when the gate goes low. Rise and fall are independently and jointly voltage controllable, with variable linear and exponential wave shapes.
VC Portamento
Voltage is slewed according to the rise and fall times.
VC LFO
When the cycle switch is thrown, the trigger input is connected internally to the end trigger output, creating a VC clock with variable waveform and independent rise and fall times.
VC Oscillator
While not as wide ranged, or accurate as a dedicated oscillator module, the VCS is still an excellent audio source. The Exp CV input is scaled approximately to the 1v/oct standard. The Output wave can be swept from triangle to saw with linear and non-linear waveforms. End Out also produces a pulse waveform.
VC Non-Linear Audio Processor (Low-Pass Gate)
If an audio rate signal is slewed, the module responds like a VCF, and a rough VCA. The signal is low-pass filtered down to silence, similar to a low-pass gate.
Envelope Follower
Positive and negative peak detection envelope follower.
VC Pulse Delay
Trigger input starts the envelope and a trigger will be produced again at the End Out when the envelope completes its cycle.
Sub-Harmonic Generator
If a series of triggers are applied to the VCS faster than the total rise and fall times, the module will divide the incoming signal by a whole number. In the audio range the output will be the sub-harmonic series.
