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Message: <blockquote data-quote="Gold" data-source="post: 996930" data-attributes="member: 411"><p>I think I said I was surprised it worked without the center tap pots. I am no circuit designer and i never tried it without center tapped pots.  To get the sections going i used two 5K resistors with a lead to ground to simulate the center tapped pot on the schematic. Then with another lead I could either get maximum or minimum gain. That works in the absence of a center tapped pot and without committing to a rotary switch. That was the context in which I made the commment.</p></blockquote><p></p>