Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: dpm309 on September 24, 2022, 01:50:54 pm
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Looking for a schematic for a Rickenbacker M12. All I can find is the M11 which has 2 6V6 power tubes. The M12 has 2 6L6 power tubes which seems to be the only difference between these 2 models. I'll open it up and see if there are any other differences. Anyone know where to find a schematic for the M12?
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What does the amp need?
I would agree that the preamp is likely the same. If the PT is dead I would not look toward Fender spec PTs. Maggies and Ricks of that period had B+ voltages more in line with Valco and Gibson amps than Fenders, so I would look for that. The ClassicTone PT for the Thunderbolt would likely be just right, but they are no longer - Hammond and MPS would likely have a similar spec PT.
Would you be willing to draw up a schematic based on what you find? Forum members would appreciate that.
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The Fender 5B5 Pro circuit is very similar to the M11 circuit aside from a 6L6G output section, some minor component value variations, and an extra pre-amp channel. The 5B4 Super layout provides period appropriate voltages.
Edited to add link.
https://el34world.com/charts/Schematics/files/Fender/Fender_Schematics.htm (https://el34world.com/charts/Schematics/files/Fender/Fender_Schematics.htm)
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I just saw this https://djlcreations.blogspot.com/2018/12/rickenbacker-m12.html (https://djlcreations.blogspot.com/2018/12/rickenbacker-m12.html) Is that the amp? If so - that cab is super cool.
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One of my old band mates just got ahold of this amp along with a Rick pedal steel. Wants me to look it over. Will post pics when he drops it off.