The Amp Garage

To have more front panel real estate you might consider stacked pots for two of the tone controls.

To get a nice leg up on a two channel amp layout in one chassis you might want to check out the schematic of a big stereo tube amp like a HH Scott 272.

Due to the large area of white lettering that tube has and the size and shape of the plates and the round getter I think this is what your tube is, or atleast the brand that it is.

It would not be the first time that a utility step down transformer out on a pole took a indirect hit of lightning and all the utility company did was replace whichever fuse blew, leaving a somewhat defective transformer out on the pole. If you know any of your neighbors there see if you can try a a...

Poor or no ground would not effect a amps distortion caractoristics .

Plug a voltmeter into the other outlet in that wall socket to
1st see what you have for wall voltage .
2) to see if it drops down when you play the amp.

That dope is a high voltage insulating lacquer and will dry too stiff even though it may say its flexible. You want a latex product . You can use very thinned out white Elmer’s glue applying a little at a time, or better yet this product. Either way test it the stuff out on a cheap old blown 6 or 8”...

It might interest you to see the schematic for my 54 GA77. This amp sounds amazing and especially when you jump both channels. Anyone of the 30 or so that have played it want to buy it. This model amp was made in true Gibson fashion with like 3 different tube complements this version is the most rar...

Interesting that no fuse blowing has taken place! If you know anyone with a good tube tester like a Hickok 600 or such a test out in it for shorts would pick that right up. I would love to know what it’s internally arcing to. If that tube is removed from the amp does the bias voltage seen on pin 5 o...

Yes. With too high a wattage limiter bulb a SS amp may not turn on / power up enough to even idle.
Many times when the voltage is too low all you will hear out of the speaker is hum which might lead you to think that the amp has a problem when it does not.

If the 2nd 12 ax7 where missing then the amp would not play. V2A is the mixer for both channels and V2A is the phase splitter to drive the power tubes. In terms of any amp with just a tone control all it does is cut back the highs when turned down . The level of bass produced will only change with h...

The turn on current surge is much higher in a tube amp when the heaters are warming up then even what you would see with a 200 watt rms solid state amp getting powered up.

This might help.

And what in terms of your playing needs would as you say “ sound fabulous “?

If you start reducing the power supply voltage enough then what you like about the amps preamp section will be lost and at that point your truly better off to keep the amp as it is and open up your wallet to get a attenuator box on the output of the amp.

The only time I used 6V6 outputs at that high a voltage was in a Highwatt 50, and they where JJ brand since they are stated to be good up to 500 volts, and after having them in the high watt I do not question that.