Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => PC Express and JSchem - Schematics and Layout diagrams => Topic started by: glassesnvests on April 07, 2014, 11:06:56 pm
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So a customer requested a Bassman AA864, but had heard that there was a mod out there to change the Bass channel to a JTM45 flavored setting. Found an altered BF Bassman schem that had the JTM mods, supposedly: (http://s101.photobucket.com/user/chocopower/media/BASSMANHYPERON.gif.html (http://s101.photobucket.com/user/chocopower/media/BASSMANHYPERON.gif.html))
so I redrew it into ExpressSCH in case anyone wanted it, I couldn't find any like it online.
Please double check me! And I've got some questions...
The customer wants:
1. Power Scaling/Master Volume
-and-
2. An Effects loop. ( I mentioned to him that it was probably unnecessary, but he insists)
1) Are there any schems out there for a fixed bias power scale? Or does Mr. O'Connor have an utter monopoly on these?
2) What are some good FX circuits that I could drop in? Should I spring for buffered or unbuffered? Series or parallel?
An help appreciated!
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Updated.
Tweaked some values in the JTM45 channel to make it more... JTM45ish.
Added Master Volume (thought about making it switachable bewteen the PPIMV and the voltage scaler?)
Comments appreciated.