Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

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Subject: Re: Non-working attenuator

From: tuk88@rocketmail.com
Date: 2014-12-30

Thank you both, for these answers.

I test at the output of the IC35, I've got the counting as at the panel board.

I check the voltage at the output, and I've got a variation from 3.6mV (0 binary) to 15.6mV (10 binary). I think it's to few.

So, I'll check the KLM-368 board.

Howether, what is the signal "VCA Mod" for ? Because, when I check the "P.Vol" signal on KLM 368 board, this one goes on a 2SA798 which is a kind of double transistor, where the signal comes too, through an inverting amplifier.

I expected either the LM13600 or the 2SA798.

I keep you in touch

Lucas