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Hoffman Amps Forum image Author Topic: Phase inverter type Master Vol.  (Read 3153 times)

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Phase inverter type Master Vol.
« on: June 17, 2005, 09:58:46 pm »

  Hoffman Amplifiers
    > Tube Amp Building - Tweaks - Repairs
        > Phase inverter type Master Vol.      
 
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aerojazz
Senior tube assistant
Posts: 156
(3/5/04 7:57 am)
 Phase inverter type Master Vol.
--------------------------------------------------------------------------------
 I remember about 10 years ago I heard a model 1959 Superlead with that mod . It did really sound good. I used to have a schem. of it. Seem to have lost it. Does anyone here have a link to one.(the mod that is)
 
Andy Poupart
Senior tube assistant
Posts: 126
(3/6/04 3:36 am)
 Re: Phase inverter type Master Vol.
--------------------------------------------------------------------------------
 I have a pdf file containing the instructions and a schematic of sorts for a post-phase inverter master volume, the so-called "RICH" mod, popular on the Les Paul Forum. I can email it to you, if you'd like. There are other PPI master volume designs, also, so this one may or may not be the one you heard.
 
aerojazz
Senior tube assistant
Posts: 159
(3/6/04 9:24 am)
 Re: Phase inverter type Master Vol.
--------------------------------------------------------------------------------
 Yea Andy, send that to foursuns@imbris.com

EDIT: I do remember that the mod involved a dual pot. I think it was dual 1 meg. Does that sound familiar?

Thanks
Steve

Edited by: aerojazz at: 3/7/04 7:10 am
 
 
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