Phaser Function knob

[nashsnazzy]

Hey gang,
I'm interested in the function knob on this TC phaser. http://www.youtube.com/watch?v=G7f8H8qwImk

Is there a way to incorporate that on a OTA phaser like a Small Stone or perhaps a DIY phaser like the Phase Royal?

[Mark Hammer]

I gather it takes the feedback signal and uses a pan/blend pot to go from 100% of the non-inverted feedback signal, to 100% of the inverted feedback signal (the inverted simply goes through a unity-gain op-amp inverter stage).  When inverted and non-inverted versions of the feedback are combined, you get no feedback.

[nashsnazzy]

Thanks for the analysis. It looks like a cool feature. I found a PCB for the Ross Clone at GGG and I think I would like to build it and try to implement this feature along with some other mods. Can anyone tell me how to implement it?

[nashsnazzy]

Sorry , I meant to say I found the Ross Phaser PCB at tone pad. My memory is failing me these days.

[mth5044]

Schematic for someone who is smarter than me:

http://i194.photobucket.com/albums/z142/Bassmanfox/Technical_Schematics/TCphaser-1.jpg

[nashsnazzy]

Thanks for that link. I understand some basics buffer and distortion pedals but this hurts my head.

Schematic for someone who is smarter than me:

http://i194.photobucket.com/albums/z142/Bassmanfox/Technical_Schematics/TCphaser-1.jpg