Odyssey, VCF replacement

Came across ARP Tech’s Dual VCF module earlier this week and was instantly inspired. Whilst later Odyssey’s (models II & III) come with a 24dB/oct low pass filter (model 4075), the Whiteface is equipped with a 12dB/oct model (4023). Despite the latter is generally considered more musical, having a steeper cutoff slope naturally produces more classical “synth” (resonant?) sounds. Moreover, as ARP Tech’s module has both, having them both in a single synth would kick ass.. To say the least ;). So today, I decided to etch a PCB for the module!

Dual VCF board with few IC sockets installed

Luckily enough, the Odyssey service manual does provide instructions to upgrade model I synths for the 4075 module so installing the completed board should be a walk in the park. But first, I need to order some parts.

Not that there’s anything wrong with the filter module on my Odyssey, far from it. The dual cutoff mode just outweights maintaining the original parts at this very moment! Promise I’ll make the installation reversable ;)

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One response to “Odyssey, VCF replacement”

  1. arto says :

    The follow-up to this mod is here.

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