Rhodes Chroma Polaris

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!

> From: 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?

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.

-- 

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...

> From: dmxkrew@...
> 
> Thanks, any ideas which components might be to blame? 

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.

-- 

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...