Silvertone Schematic

passfan · Post by **passfan** » Sat Oct 01, 2011 1:57 pm

I have an old EL84 Silvertone stereo amp in for restoration and came across something unique I wanted to run by some here. The amp has global negative feedback taken off the 8 ohm tap , run through a2.7k / .1uf back to the cathode of the input triode. Is this common on stereo amps of the 50's and 60's ? I've never run into it before.

passfan · Post by **passfan** » Sat Oct 01, 2011 2:31 pm

Found a schematic for the amp

Structo · Post by **Structo** » Sat Oct 01, 2011 4:58 pm

I think it is fairly common for all push pull tube amps to have some form of negative feedback.

passfan · Post by **passfan** » Sat Oct 01, 2011 7:07 pm

Is it normally applied to the cathode and not the grid ?

gary sanders · Post by **gary sanders** » Sat Oct 01, 2011 7:14 pm

Curious,what model is your Silvertone?

tictac · Post by **tictac** » Sat Oct 01, 2011 8:29 pm

It's normally applied to the cathode as shown. See Fender Princeton and Princeton Reverb for comparison...

passfan · Post by **passfan** » Sat Oct 01, 2011 11:10 pm

Have no idea the model number. I got lucky over at DIYAUDIO and found a schematic. I'd not spent a lot of time doing stereo circuits. Thanks for the info

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Silvertone Schematic

Silvertone Schematic

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