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DC Offset Adjustment on Pioneer Spec-4 Amp

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My new Spec-4 cleaned-up to near mint in front, and VG behind the faceplate. It sounds great on my shop Advents. Knocks you down with a whisper. Can't wait to try it on my Epi- 400+s!

I measured the DC output at the speaker terminals. There is about -2.5mV on the R side, but -16mV on L. Not enough to fry any speakers, but I want to zero it out better. There are 3 pots on each output card. One on the top edge towards the R, One below it, and one on L side, symetric to the lower one. Which one is the DC Offset adjustment? The one on the top edge?

Thanks,
I will be buying a Ser Manual soon, but want to deploy it ASAP.

Paul



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