JMP-1 mods?

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miguel
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JMP-1 mods?

Post by miguel » Mon Oct 25, 2004 10:45 pm

Anybody aware of mods for the JMP-1 preamp? Mine sounds pretty good as is (NOS Mullards help) but you know the drill... looking for more plexi sound. Getting rid of the silicon diode would probably be a good thing.

I'm not into heavy preamp distortion - I use the Clean 1 or 2 (mostly 2) to drive the power section of a Lexicon Signature 284 (NOS Teslas) on "10".

New to the board... Thanks for your help.
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derek.
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Post by derek. » Thu Oct 28, 2004 3:01 am

hey dad, first step is to buy two 4 space rackmount cases to split up the back-breaking 8 space rack. that should make it sound better :wink:
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Post by VelvetGeorge » Thu Oct 28, 2004 4:05 am

Or at least put wheels on it.
:lol:

George
Check out Plexi Replicas for my personal amp builds...
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miguel
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roadies!

Post by miguel » Thu Oct 28, 2004 10:55 pm

who needs wheels when you have a young up-and-coming guitarist in the house to pack your gear around? :D

not to mention the borrowing of said dad's gear :wink:
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Country Boy Shane
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Re: JMP-1 mods?

Post by Country Boy Shane » Thu Oct 28, 2004 11:04 pm

miguel wrote:Anybody aware of mods for the JMP-1 preamp? Mine sounds pretty good as is (NOS Mullards help) but you know the drill... looking for more plexi sound. Getting rid of the silicon diode would probably be a good thing.

I'm not into heavy preamp distortion - I use the Clean 1 or 2 (mostly 2) to drive the power section of a Lexicon Signature 284 (NOS Teslas) on "10".

New to the board... Thanks for your help.
No one likes a liar, so no one likes a rackmount pre-amp that tries to be a plexi. :lol:
Just Feel it MAN! -Shane Gorski "Country Boy Shane"

www.flickr.com/photos/shanegorski
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Post by Guest » Sat Oct 30, 2004 6:31 am

he's got the whole van halen rackmount setup if i'm not mistaken...just missing the 68 plexi which i am hoping i will add to the setup soon enough.

iPod Photo or Plexi

...i need to start another band so i have more incentive to use an amp.
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derek.
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Post by derek. » Sat Oct 30, 2004 6:32 am

btw that was me.
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miguel
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faux plexi

Post by miguel » Sun Oct 31, 2004 1:17 am

Of course, if you were to believe the Marshall advertising and think you'd get it to sound like a plexi all by itself, you'd be sorely disappointed. :? No power tubes!

My rig might not sound 'exactly' like a plexi, but it's got a nice vibe, IMO. The preamp is only part of the equation... it's the cranked up power amp that gives it the tone and touch sensitivity.

Not exactly the EVH setup, but it's the same idea:

Warmoth Soloist w/ Duncan '59 model bridge/neck, vintage strat middle
JMP-1 (for lead tone - Clean 2, gain=20, volume=16)
Class A EL84 power amp (dimed) into internal dummy load
Alesis Q20 (time delay fx)
Marshall 8008 Valvestate power amp (valvestate mode)
Marshall 2x12 w/ G12H-30 reissues

I'll try to post a clip sometime.

mike
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