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UNI33 Matrix Mixer - A Bus and B Bus reversed?

2015-07-17 by scottwest8

Anyone want to give me a reality check…in the schematic for the UNI33 matrix mixer, the "A" bus (non-inverted, since it goes through both inverting stages) is grounded in unipolar mode, while the B bus (inverted, since it goes through only one inverting stage) is not. This means that in unipolar mode, this is a zero-to-negative-unity mixer, and in bipolar mode its pot is counterintuitive (positive amplification at CCW and negative at CW). Not hard to rework, i just wanted validation before i start soldering.

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