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Hoffman Amps Forum image Author Topic: Speed Pot for Hoffman AB763 ?  (Read 2643 times)

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Offline mresistor

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Speed Pot for Hoffman AB763 ?
« on: June 10, 2012, 08:42:34 am »
Hi I searched and couldn't find the answer. In a Fender AB763 the speed pot is a 3MA-R reverse wound. In Dougs AB763 it appears it is a 3MA not reverse wound.  Is this correct?
« Last Edit: June 10, 2012, 10:11:51 am by mresistor »

Offline sluckey

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Re: Pots for Hoffman AB763 ?
« Reply #1 on: June 10, 2012, 09:09:50 am »
I'm guessing Doug just has it listed wrong on his layout and in his parts list. I say that because he sells a 3MRA pot but does not sell a 3MA pot. I bet Doug could clear this up.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline P Batty

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Re: Pots for Hoffman AB763 ?
« Reply #2 on: June 10, 2012, 09:42:53 am »
What ever it is, its worked fine in my AB763 build.

Offline mresistor

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Re: Pots for Hoffman AB763 ?
« Reply #3 on: June 10, 2012, 10:05:36 am »
Steve - I think you're right. In my HPR the speed pot is a 3MA-R so I'm going to go with that, since they are the same tremolo circuit.
Thank you for your help.

Offline PRR

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Re: Speed Pot for Hoffman AB763 ?
« Reply #4 on: June 10, 2012, 10:10:45 pm »
The way it works, a Reverse is better.

Linear will be fine electrically , but the fast zone will be all cramped up on the dial.

Offline EL34

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Re: Speed Pot for Hoffman AB763 ?
« Reply #5 on: June 11, 2012, 09:43:49 am »
Go to my pots page and read what it says for the CTS amp pots

http://www.hoffmanamps.com/MyStore/catalog/parts5.htm

 


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