Help me find an amp with this tube compliment

[Axtman]

I recently purchased an old Rauland Model 1810 PA amplifier for $10. I am considering converting it to a guitar amp. The tube compliment is 6SC7 preamp, 6SN7 preamp, 6SL7 phase invertor, 5Y3 rectifier and pair of 6V6 output tubes. Do you know of a guitar amp that uses these tubes?

Thanks!

[g1]

Some of those tubes were used in various old Ampeg circuits, that might be a good place to start looking.

[Justin Thomas]

What g1 said. The late-40s/early-50s Ampegs - the Portaflex seriesnin particular come to mind. Don't be fooled - those things are NOT just for Bass. There's also the old "Guitaramp" & "Accordiamp" series, and the Jet/Rocket/Mercury. My first Reverberocket (a 63) was all octal. Or any Fender from before the tweed "D" series, old Gibson's from the 40s & 50s...

I'm not saying it can't be done, but I do associate those tubes with JAZZ amps, since it WAS the "period-correct" music of the day...

Justin

[olddawg]

If the tubes aren't fresh you can make it any number of 6v6 amps. Tube sockets are cheap and 12ax7s plentiful. You can also use an SS rectifier.

[J M Fahey]

Make it easier for you:
1) post the *original* schematic.
2) based on that, probably not too much modding (basically changing EQ and maybe some gain) will turn it into "a" Guitar amp, although maybe not *exactly* a given Fender/Ampeg/Gibson, probably a hybrid of them, yet good sounding on its own.

Faster / easier than full stripping and rebuilding from the ground up ... Which of course is also an option.

[dmartn149]

A 5a3 Deluxe has everything but the 6sn7. I'd probably start by changing all the caps, add a 1/4 input and a 3 prong power chord and see how it sounds. I'm really a novice at this so others may have better advice.

[Axtman]

Here is the schematic.

[eschertron]

From looking at the schematic, I'd suggest fully bypassing the first stage cathode with a 22/25u (or equivalent) cap. That will buy you a little noise immunity, and a little gain. Looks kinda like any 50's circuit (guitar or otherwise) to me.

[Justin Thomas]

I'll second eschertron. Heck, add one to the second stage too just for shits & grins. Easy to take out if it proves to be too much. I did it to an old Lectrolab - went from Jazz Amp to Neil Young Amp.

Justin