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Archive for chromapolaris.
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2017-05-31 by dmxkrew@...
Got my Polaris almost perfect now.
However, one of the 6 voices is slightly quieter than the others.
I have done the volume calibration correctly so that each voice responds to envelopes identically in terms of attack/release times.... but one voice is just a bit quiet.
Is there a trimmer for this somewhere?
or.....?
I have recapped quite a lot of the synth at this point!
2017-05-31 by Paul D. DeRocco
> From: dmxkrew@...No trim for this. If you don't have a scope, you could poke around with an audio probe (an audio input that has a fairly high impedance) and see where in the chain it appears. You could use a voltmeter to check the VCA control signal with a scratch patch selected. And you could try swapping ICs with another channel to see if the problem moves. But ultimately, you'll have to fix whatever is broken.
>
> Got my Polaris almost perfect now.
>
> However, one of the 6 voices is slightly quieter than the others.
>
> I have done the volume calibration correctly so that each
> voice responds to envelopes identically in terms of
> attack/release times.... but one voice is just a bit quiet.
>
> Is there a trimmer for this somewhere?
2017-05-31 by dmxkrew@...
2017-05-31 by Paul D. DeRocco
> From: dmxkrew@...Nope. Could be a lot of different things. There's no way to avoid diagnosing it logically by measuring the control signals, listening to the audio signals, and swapping ICs between the channels.
>
> Thanks, any ideas which components might be to blame?