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In Reply to: RE: dc bias pot adjustment is not mentioned... posted by walkstoslow on February 19, 2023 at 10:54:18
Page 8 of the service manual. :)
In fact, the 40mA quiescent current is even labeled on the schematic. 40mV measured across the 1 ohm emitter resistors yields that current.
This is a very straightforward amplifier design for the era.
I have decided to put this back in the closet...
Well, if you want to learn and play with it, go ahead.
But here on AA, (and especially in the Tweakers area,) is not the place to find good advice. :)
Check on DIYaudio.com, for example. I did a quick search and found numerous threads regarding this amplifier. Many tinkerers/technicians have been inside these amps.
thanks for the advice....:)
My amp is the sansui au317, tranny bias is 10mv, I was looking at the sansui au 517, and noticed that the same tranny is used with the same value of emitter resistance, I noticed that the 517 bias is 20mv, could or should i up the 317 10mv to the 717mv?
317 is rated at 50w, 717 at 65w...per channel.
thanks for your interest...:)
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