Are those Mullard EL-37s?!?
In all honesty, you really out to start a separate thread on this one. The is one of Fisher's all-time legendary amps and will probably create quite a stir among AK's Fisher community. Title the thread "Free Fisher 50-AZ" and watch it explode.Didn't bring it up because he said it is not working and is only a chassis, but he also gave me a Fisher 50 AZ. Not sure what's wrong with it. I haven't even tested the tubes yet, but damn is it heavy.
Jered, I was expecting to see something like this on your R-20 but I don't. (from my 1958 TA-500):
It is an extra potentiometer to allow the TA-500 to be easily modified to control the volume on two separate channels. There was no provision for a balance control, however; you'd just have to adjust the volume of your outboard pre-amp (PR-66, 30-C, etc.). It wasn't the most sophisticated approach. There is also an outer ring "Loudness Contour" switch on the TA-500's volume control which accounts for the concentrated complexity.
Clearly, though, your volume control (the one in the middle, right?) is just a single potentiometer. I don't see anything under the hood that would indicate the presence of a second channel pre-amp.
How does it compare with your R-20, Sam?
In all honesty, you really out to start a separate thread on this one. The is one of Fisher's all-time legendary amps and will probably create quite a stir among AK's Fisher community. Title the thread "Free Fisher 50-AZ" and watch it explode.
In all honesty, you really out to start a separate thread on this one. The is one of Fisher's all-time legendary amps and will probably create quite a stir among AK's Fisher community. Title the thread "Free Fisher 50-AZ" and watch it explode.