Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: frpax on April 18, 2017, 08:06:16 pm
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Hi all!
I scrounged up a pawn shop find! For $20, I got an old Crate 1x15 combo. Only thing missing is the solid state amp! Perfect!! The speaker looks ok and I'll not mess with it unless I have to.
The chassis area is 3.25 inches high by 17 inches wide by 13.75" deep as it sits. I plan on lowering the chassis area in the back to accommodate tubes (about 2 inches is about all I think I'll need). PLENTY of room to do one of many things!!
I'm thinking a double ended 6L6 or EL34 design with a full tone stack. I did the Plexi 6V6 (converted to 6L6) thing before. Maybe I could redo that (only better this time) or something else. I don't think I want reverb.
Suggestions?
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thinking a double ended 6L6
you mean parallel SE?
pick your favorite preamp, add the power tubes, walla! well maybe some math to figure out PT and OT
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Just be sure to remember tube layout in reference to the already installed speaker. Especially if you get a pre punched chassis.
A 17 inch width should be plenty to get you a nice push pull pair of what you're wanting. If you want to do this all custom, you could still use a 2.5 inch high chassis but design your faceplate to be larger and cover the rest of gap in enclosure.
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thinking a double ended 6L6
you mean parallel SE?
I'm not sure what that means. I'm just wanting something in the general vicinity of 30-ish watts.
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Just be sure to remember tube layout in reference to the already installed speaker. Especially if you get a pre punched chassis.
A 17 inch width should be plenty to get you a nice push pull pair of what you're wanting. If you want to do this all custom, you could still use a 2.5 inch high chassis but design your faceplate to be larger and cover the rest of gap in enclosure.
The whole thing is going to have to be custom. I have access to a sheet metal bender, so I've got that going for me.
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not sure what that means
Single ended (SE), as apposed to push-pull(PP)
you probably won't get there with PSE unless you have lots of tubes n like the sound :icon_biggrin:
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not sure what that means
Single ended (SE), as apposed to push-pull(PP)
you probably won't get there with PSE unless you have lots of tubes n like the sound :icon_biggrin:
I need to learn more of the lingo! All I know is that it takes 2 6L6's or EL34's to get the headroom I want.
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I'm leaning towards a Bassman 5F6-A circuit.... :dontknow:
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Really wanna learn?
Buy this book and build that amp and learn more than you could ever possibly absorb.
https://www.ampbooks.com/mobile/books/bassman/ (https://www.ampbooks.com/mobile/books/bassman/)