> From: tstu102
>
> New to the forum. I purchased a Polaris recently, and it
> sounds great, except that I am getting slight distortion /
> distorted harmonics on most of my patches - distortion I have
> not heard in demos of working polaris. Especially on bass, it
> makes the synth very hard to fit in a mix, and smaller
> sounding than my other synths.
>
> I tried calibrating the VCA's in the adjustments section, but
> to no avail, and plan on having a technician:
>
> a.) check all voltages
> b.) replace all capacitors with higher quality ones
>
> I have heard about replacing the OP Amp output, but have been
> speaking with a guy who has modded his Polaris to sound
> absolutely incredible, and he suggested that replacing the OP
> amp with a more modern one may deliver a little more hi end,
> but this affects the balance of the sound negatively in his
> opinion. He uses the original LM part and says it works great.
>
> My question is: is there anything else you can suggest which
> may modify / upgrade the audio path while I have the unit open?

Is it intermodulation distortion between the channels, or just distortion
within each channel? If it's the former, you can hear low frequency IM
products when you play notes close together way up high. If you don't, then
the problem isn't the output board.

--

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