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Hoffman Amps Forum image Author Topic: Reverb tank impedances  (Read 1850 times)

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Offline isaac_teller

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Reverb tank impedances
« on: August 13, 2022, 02:51:16 pm »
Hi. Does anyone happen to know what the input and output impedances are on the Fender Frontman 25R spring unit? I'm going to try to use it on a Champ Blackface build. Thank you.

Offline sluckey

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Re: Reverb tank impedances
« Reply #1 on: August 13, 2022, 03:03:47 pm »
The service manual is easily found by google. The reverb unit is REVERB SPRING PAN 1BB2E4A.

I doubt a tank from a SS amp will work with a tube circuit. But, as long as you have one, give it a try. Then buy the correct tank.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline thetragichero

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Re: Reverb tank impedances
« Reply #2 on: August 13, 2022, 05:31:08 pm »
tank would work with a capacitor-coupled reverb driver but I'd invest the twenty bucks or so in a better pan, in which case you can go with an 8ohm pan if you already have the reverb transformer (I've have tons of spare high impedance pans sausages out of old organs so i mostly do the capacitor-coupled driver but it certainly sounds different than what you'd normally think of as "fender reverb")
« Last Edit: August 14, 2022, 09:10:56 am by thetragichero »

Offline isaac_teller

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Re: Reverb tank impedances
« Reply #3 on: August 14, 2022, 12:05:01 am »
Thanx for all the info.

 


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