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Hoffman Amps Forum image Author Topic: Harvard 5F10 preamp grid resistor size  (Read 1651 times)

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Offline Diverted

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Harvard 5F10 preamp grid resistor size
« on: January 15, 2021, 02:15:55 pm »
Hi,

I'm going to start building a 5F10 clone soon. This is an odd one as it has three inputs@68K each. If I only go with two inputs, would I be looking at approx 40K each for the two?

Thanks,

Ted

Offline thetragichero

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Re: Harvard 5F10 preamp grid resistor size
« Reply #1 on: January 15, 2021, 02:48:57 pm »
I've got a bunch of 68k metal films in my parts bin so I'd throw 68k in there and not try to be too picky. ain't gotta be fancy with a lot of this stuff

Offline sluckey

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Re: Harvard 5F10 preamp grid resistor size
« Reply #2 on: January 15, 2021, 04:48:11 pm »
Just stay with 68K and add a 1M to jack 1, tip to sleeve.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

 


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