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Author Topic: MarshallJMP Noise Mod  (Read 21752 times)

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trader144

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Re: MarshallJMP Noise Mod
« Reply #30 on: Time Format »

Got a chance to crank it.
Definitely much lower noise than before the noise mod and the highs are clear as a bell


My mids are really scooped though and it looks like C32 is soldered correctly.
I have the mid eq up to 10 now when I never had it past 4
It might just be that my caps were really really bad or maybe my ears now want more mids.

If I were to do the 3.666 eq mod for the mids, since I just want more range (higher settings) in the mids and I do not want to change the bandpass range, can I get away with just replacing R151 with a trimpot?

The trimpot seems to control the voltage after the op amp and it does not appear to change the bandpass filter range and I really don't want to calculate the cutoffs.

I know I could add an eq pedal or rack after the eq into the send/receive jacks but trying to prevent more stuff.

David

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Guitars: Malmsteen strat, Fender '62 reissue
Rig: Avid 11 Rack -> ADA MP-1 (stock) ->  ADA Microtube 100 -> ADA split stack

MarshallJMP

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Re: MarshallJMP Noise Mod
« Reply #31 on: Time Format »

Yes changing R151 should do the trick.
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trader144

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Re: MarshallJMP Noise Mod
« Reply #32 on: Time Format »

Well....I owe some apologies.

Just discovered that the EQ on my G Major was turned on and it was cutting the mids, so it wasn't the MP-1 after all.
Good news for me is I now like to crank the MP-1 mids and then later in the signal chain cut them with the G Major EQ - very different EQ bands of course.

Sorry all.
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Guitars: Malmsteen strat, Fender '62 reissue
Rig: Avid 11 Rack -> ADA MP-1 (stock) ->  ADA Microtube 100 -> ADA split stack

rnolan

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Re: MarshallJMP Noise Mod
« Reply #33 on: Time Format »

The hardest thing I found with MP1/2 and associated kit is when to stop, I'm happy, that's my sound, they are so versatile  >:D
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Studio Rig: Stuff; Live Rig: More Stuff; Guitars: A few
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