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"The Yusynth Diode Ladder VCF sounds incredible. I love the brassiness you can get with this filter. The voltage control of the resonance is a great feature. Another vintage filter design sweetened by the synth guru Yves Usson. Custom designed Front Panel by Free State FX and engraved by Front Panel Express. The PCB was assembled parallel with the Front Panel which creates a very shallow module and measures less than two inches deep. The Yusynth Diode Ladder VCF is a wonderful addition to every cabinet.
Here is some information about the Diode Ladder Filter from the Yusynth Website:
'Well, here is another classical and very special filter based on the EMS diode ladder filter! This filter has a sound of its own and is the signature of the classical Pink Floyd's song "On the run".
My aim here was to design a quite faithful copy of this mythic filter while using components that minimize the burden of selecting a great number of matched transistors. This is why I used transistor arrays (CA3046, CA3096). However, because the CA3096 has become a rare part and is now overpriced, I have also designed a PCB with discrete trannies to replace it. As for all the other filters of my YUSYNTH project, I have added an input and an output buffer to adapt this filter to the input and output levels of my modular system. I also added an input for voltage control of the resonance : everything was there in the original module but was not made available, probably because of the limited size of the patch pin matrix of the AKS/VCS3... Because, my power supply standard is +15/-15V, I have included a power regulator IC (78L12) to convert +15V to +12V and a single transitor voltage regulator -15V to -9V (I wanted to use a 79L09 but changed my mind when I realized that this voltage regulator is quite a rare part and is difficult to source).' - Yves Usson
Assembled with:
Custom Engraved Front Panel by FSFX / Front Panel Express
Shallow Module Depth of 2 inches (measured from rear of Front Panel)
Frequency Control
Resonance Control
Input 1 and Input 2 Level Controls
Frequency CV Level Control
Resonance CV Level Control
2 Audio Inputs
1V/Oct CV Input (not musically accurate)
Freq CV Input
Resonance CV Input
Audio Output
Switchcraft Jacks
24mm Alpha Pots
Polyester Film Capacitors
Metal Film Resistors
Double Plated PCB with Soldermask
Runs on +/- 15 Volts
Hand Signed and Numbered
Ships with one (1) 20 in. long MOTM to .com Power Cable"
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