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SAE 2200 bias adjustment

Vintage Solid State - AudioKarma.org Home Audio Stereo Discussion Forums - www.audiokarma.org
SAE 2200 on the bench for rebuild. I had to install new bias trimpots. The old ones were burnt. There were burnt resistors and outputs too.

What is the setting for minumum bias? All three legs of the pot are in use. The wiper goes to the base of the bias transistor, the each of the other legs goes to a resistor, one connected to the emitter, one to the collector.

Schematic is on hifiengine. The bias transistor is Q25. Can someone have a look for me and tell me how to set it, so I don't try to crank the max bias?
Date: Jul 13, 2013   


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