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Hoffman Amps Forum image Author Topic: 5F1 with 6SL7 and 6BM8 reverb  (Read 1841 times)

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Offline isaac_teller

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5F1 with 6SL7 and 6BM8 reverb
« on: May 31, 2021, 10:22:33 am »
Hello. I'm building a 5F1 with a 6SL7 instead of a 12AX7. Would I need to up the anode and cathode resistors on the triodes to compensate for the lower gain of the 6SL7? The reverb section will remain unchanged. Several years ago I built it as pictured and it sounded great.
Thank you.


https://music-electronics-forum.com/filedata/fetch?id=841116&d=1456179449

Offline sluckey

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Re: 5F1 with 6SL7 and 6BM8 reverb
« Reply #1 on: May 31, 2021, 10:42:31 am »
I've had good results with 120K plate and 2.2K cathode...   http://sluckeyamps.com/RCA/Ampeg_J12B.pdf

Also used 270K and 4.7K...   http://sluckeyamps.com/rocky/rocky.pdf
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline isaac_teller

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Re: 5F1 with 6SL7 and 6BM8 reverb
« Reply #2 on: May 31, 2021, 10:52:49 am »
Thank you.

 


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