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 Post subject: Eddie's Marshall Preamp Tubes
PostPosted: Sun Dec 15, 2013 5:57 pm 
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I saw this picture of Eddie's Marshall and it appears he is using less than 3 preamp tubes. I heard it was called the direct bypass mod, but I cant find any other info on it. Anyone know what this is or every tried it? seems interesting...


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 Post subject: Re: Eddie's Marshall Preamp Tubes
PostPosted: Mon Dec 16, 2013 5:53 am 
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Are you talking about Edda first marshall ?

ACCORDING to Eddie and his techs his marshall was 99% stock

The only thing I think was changed was his tubes in his marshal

There was a device that edd used to control the wattage on the Marshall CANT REMBER WHAT THAT THING WAS CALLED if you look you will find what I am talking about

Otherwise the only thing you need is to change the tubes of a 1959 Marshall
(BAM YOU HAVE A EVH MARSHAL CLONE) better get that frankstrat out :lol:


HOPE THIS HELPS


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 Post subject: Re: Eddie's Marshall Preamp Tubes
PostPosted: Mon Dec 16, 2013 10:36 am 
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Same amp, but 3 preamp tubes. :) This was during recording VH2.
Maybe he was just changing tubes there?


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 Post subject: Re: Eddie's Marshall Preamp Tubes
PostPosted: Mon Dec 16, 2013 3:51 pm 
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He could have been changing tubes, I noticed the VH2 picture had all 3, but im not sure when this photo was from. He had a few minor mods done only to do with the caps used, not the design of the circuit and he used a variac transformer and most of the VH1 sound is due to in-studio EQing, reverb,miking, etc... and the amp didn't actually have the tone that comes across on the album. I was intrigued by the missing preamp tubes though and was wondering if anyone has tried it or knows if its safe to do


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 Post subject: Re: Eddie's Marshall Preamp Tubes
PostPosted: Sat Dec 21, 2013 7:51 pm 
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Oke, tried it tonight with my 1977 jmp. V2 preamp valve removed. Volume 1 channel was a little past 8. Normally this setting would destroy the house..... Didn't expect any sound but to my suprise there was a very clean sound at bedroom level, couldn't get it any louder than that. And no distortion at all. So maybe Ed did remove the V2 to practice quietly backstage? Anyways I like it much better with the V2 back in place. :twisted:

Some pics of the 'experiment':

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Image

On 'full throttle':
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