Changing .0033uf caps in Ross Phaser.

[Chugs]

I noticed a Ross phaser clone uses all .0022uf caps instead of .0033uf caps around the OTA's. What effect would this change have on the sound?

A shifting of the filter range?

[Mark Hammer]

Yes, shifting the range of sweep downwards.

[Chugs]

Ah, ok.

So, to be clear, decreasing the size of the caps lowers the range?

Follow up question: Any real difference in using 1.2K instead of 1.8K resistors around the OTA stages?

[Mark Hammer]

My earlier reply was a little ambiguous.  Using larger-value caps will lower the range in the spectrum where the notches will be created.

As for changing the 1k8 resistors to 1k2, largely above my pay grade.  But since the 1k8/27k pairs each divide down the +4.5V reference voltage that feeds the inverting inputs, my guess is that yes, it will impact on functioning.  Exactly how, though, I don't know or can't predict.