Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Esquirefreak on October 14, 2025, 02:31:46 pm
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So, I had this thought a couple of days ago. I've only just began drawing the power amp section. But if any of you have tried it and it's not worth the effort, just let me know.
I wanna build an SE amp with harmonic trem. Mosfet based trem section and PI with the HPF/LPF each having a dedicated OT and speaker. The preamp will be mono with a simple VOL/TONE based on Fender 6G2.
It will be a slow build, since spare time is getting scarce here.
/Max
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I did something similar earlier this year, although the power amps were push-pull in mine. See the thread here: https://el34world.com/Forum/index.php?topic=32551
The preamp was based on the 6G3, feeding a crossover centered around 500Hz to separate the bass and treble signals. Each signal went to it's own 5F11-ish power amp, where the bias on each power amp was modulated out of phase with each other.
It works great and I'm very satisfied with it. I've thought about making a single-ended version myself, so I'd love to hear how it goes for you. I will say it makes a big difference if you can get some speaker separation between the two sides.
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Your build sounds great! 👍
This will, once again, be a very slow build. I'll update as soon as I make progress.
/Max
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Nice schematic drawing skill! Looks more like George than Leo.