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Seppoman's SSM2164 PCB (work in progress...)

==== Parts List ====

|Part           |Value     |Reichelt No.   |
|               |          |               |
|C1,C2          |220 uF    |RAD 220/25     |
|C3-C6          |560 pF    |KERKO 560P     |
|C7-C12         |100nF     |Z5U-2,5 100N   |
|C13-16         |100pF     |NPO-2,5 100P   |
|C17-C20        |470nF     |Z5U-5 470N     |
|IC1            |SSM2164PZ |(*)            |
|IC2,IC3        |TL074     |TL 074 DIL     |
|P1-P4          |10k       |64W-10K        |
|R1-R4, R9-R12, |27k       |METALL 27,0K   |
|R17-R24        |27k       |               |
|R5-R8          |470       |METALL 470     |
|R13-R16        |5.6k      |METALL 5,60K   |

(IC sockets, pin headers, flat ribbon cable etc are omitted)

Reichelt Public Shopping Cart: https://secure.reichelt.de/?;ACTION=20;LA=5010;AWKID=259484;PROVID=2084

=== Where to get the SSM2164 ===

(*) There are quite a few places where you can buy the SSM2164, e.g. Farnell or Digikey usually have them on stock. Feel free to add your finds to this section :)

=== Value of C17..C20 ===

These capacitors are part of a low pass filter that smoothes out noise/DAC steps etc from the CV input signal. There's a tradeoff between best cancellation of any zipper/background noise and a very snappy VCA on the other side. The value of 470nF stated in the parts list above is more on the "Silence" side of things. If you prefer a faster response of the VCA in return for some noise in certain situations, you can try lower values in this place. e.g. 220nF is a usable compromise, but you can go lower to 100nF, 10nF or even leave out the capacitor altogether. I suggest you might try out what suits you best with one single channel before stuffing all four caps.
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