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1964 Gibson GA-19RVT Fattening It Up

#1 User is offline   badbluesplayer 

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Posted 16 November 2017 - 05:02 AM

Everybody was thin in the sixties. Especially these Gibson Falcons. This very early 1964 GA-19RVT was actually built to the schematic for the Maestro 214 RVT. We fixed a couple of things and made some changes to the circuit to fatten it up. The way the old circuit worked, you couldn't access the sweet spot of the amp. We fixed that. The reverb and tremolo work well and it's ready to finally sound like a real amp.

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TENNESSEE AMPLIFIER COMPANY
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#2 User is offline   badbluesplayer 

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Posted 25 November 2017 - 06:41 AM

Here's what we did to fatten up the thing. Larger coupling caps for more lows, smaller cathode resistor on the first gain stage for a little more symmetrical distortion early, removed the tone sucker thingy - a disastrous little series of caps and resistors that they put in some of these amps, increased the size of the cathode bypass caps on the second gain stage and the power tubes for more girth, and rewired the tone/volume controls to the Fender Deluxe style arrangement, which has a nice flat response but requires some fiddling with the controls to find the right settings. It sounds really nice now all the way up on the volume control. Good harmonics and just the right thickness. Tremolo and reverb are pretty darn good. Fifty bucks later he has a amp that'll turn some heads. [thumbup]

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TENNESSEE AMPLIFIER COMPANY
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