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Hoffman Amps Forum image Author Topic: Four Prong Pot Question  (Read 2199 times)

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Offline dbell7

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Four Prong Pot Question
« on: July 15, 2020, 11:24:40 am »
Hi, I recently bought a used Fender Sidekick 65 Bass that was made in japan, and the four-prong master pot is broken. I came across Hoffman's 350KA pot with tap point, and was wondering if this would be a good replacement to the A10K knob that was there before, since they both have four prongs.

Offline EL34

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Re: Four Prong Pot Question
« Reply #1 on: July 15, 2020, 11:50:04 am »
You need to give the guys more info
Post a schematic link so they can see what your map has

Offline dbell7

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Re: Four Prong Pot Question
« Reply #2 on: July 15, 2020, 12:00:54 pm »
You need to give the guys more info
Post a schematic link so they can see what your map has
That's just the thing, I can't find any information on the amp anywhere.

Offline shooter

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Re: Four Prong Pot Question
« Reply #3 on: July 15, 2020, 12:46:01 pm »
trace the 4 wires, make a sketch and post
10k is typically NOT a good swap for 350K even if they are both 4 legged
Went Class C for efficiency

Offline sluckey

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Re: Four Prong Pot Question
« Reply #4 on: July 15, 2020, 01:04:08 pm »
Short answer... NO.

Here's the schematic. You can use a 10K-A without the tap.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline Latole

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Re: Four Prong Pot Question
« Reply #5 on: July 15, 2020, 01:32:50 pm »
Some Fender 10 K here, not with 4 lugs.

Could be useful if you want to use same knob?

https://darrenriley.com/product-category/fender-amp-parts/potentiometers/

Few more informations on Sidekick amps:

https://www.schematichell.com/fender/Fender_Sidekick-15-25R-35R-65R_sch.pdf
« Last Edit: July 15, 2020, 01:36:12 pm by Latole »

Offline dbell7

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Re: Four Prong Pot Question
« Reply #6 on: July 15, 2020, 04:08:06 pm »
Some Fender 10 K here, not with 4 lugs.

Could be useful if you want to use same knob?

https://darrenriley.com/product-category/fender-amp-parts/potentiometers/

Few more informations on Sidekick amps:

https://www.schematichell.com/fender/Fender_Sidekick-15-25R-35R-65R_sch.pdf

Do you suggest I forget about the four prongs, and just stick with a three prong as long as it matches the numbers?

Offline shooter

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Re: Four Prong Pot Question
« Reply #7 on: July 15, 2020, 04:14:44 pm »
Quote
You can use a 10K-A without the tap.

Went Class C for efficiency

 


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