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Thread: Help me find an amp with this tube compliment

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    Help me find an amp with this tube compliment

    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!

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    Don't forget the joker g1's Avatar
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    Some of those tubes were used in various old Ampeg circuits, that might be a good place to start looking.

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    Just because they don't have tubes doesn't mean they don't have feelings! - glebert

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    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

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    "Wow it's red! That doesn't look like the standard Marshall red. It's more like hooker lipstick/clown nose/poodle pecker red." - Chuck H. -
    "Of course that means playing **LOUD** , best but useless solution to modern sissy snowflake players." - J.M. Fahey -
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    Old Timer olddawg's Avatar
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    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.

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    Old Timer J M Fahey's Avatar
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    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.

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    Juan Manuel Fahey

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    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.

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    Here is the schematic.

    Click image for larger version. 

Name:	Raulland Schematic.JPG 
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Name:	Rauland Schematic.JPG 
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    Supporting Member eschertron's Avatar
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    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.

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    If it still won't get loud enough, it's probably broken. - Steve Conner
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    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

    0 Not allowed! Not allowed!
    "Wow it's red! That doesn't look like the standard Marshall red. It's more like hooker lipstick/clown nose/poodle pecker red." - Chuck H. -
    "Of course that means playing **LOUD** , best but useless solution to modern sissy snowflake players." - J.M. Fahey -
    "All I ever managed to do with that amp was... kill small rodents within a 50 yard radius of my practice building." - Tone Meister -

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