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Lets get Technical > All Things Tube All about preamp and power amp Tubes.

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Author Topic: MP-1 got Noisy...  (Read 6444 times)

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Iperfungus

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Re: MP-1 got Noisy...
« Reply #30 on: Time Format »

So replaced the caps on the tube board and tested.

Strangely the insane noise I was getting the last time I tested, which was louder than the actual guitar signal"!!!!  is gone....................

seems a bit strange to me as this noise was crazy loud.  I wonder did opening and taking the guts out move something back to where it should have been?  The caps alone don't seem entirely responsible for the fix.

Who knows perhaps they are.  MP1 sounding f**king awesome!  Gonna rehearse with it today.

Will replace the last few caps tomorrow ones situated at the MDRT.

 :thumb-up: :thumb-up: :thumb-up:

Times for some good luck!
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On the run again!

Rack stuff from Hell:

ADA MP-1 (modified by MJMP)->TC Electronic G Major->Marshall Valvestate 8008 power amp

Marshall JMP1->Alesis Quadraverb GT->Advance Tube Technologies TA '70 tube power amp

Zoom 9150->Marshall Valvestate 8004 power amp
Zoom 8050 MIDI Controller
Zoom FP01 Expression pedal

Behringer FCB1010 MIDI controller

Blackstar HTV 212 stereo cabinet with 70/80 Celestion speakers

Amps:

Rivera Pubster 25
Blackstar Fly 3 amp + external speaker

Stomps, stomps, stomps...and stomps (Bogner rules!):

TC Helix phaser, Xotic RC Booster, TC Sentry noise gate, Bogner Ecstasy Blue, Bogner Ecstasy Red, Mad Professor Royal Blue Overdrive, Sonic Research Turbo Tuner, TC Flashback delay

Guitars:

2018 Arrogantia Pandora Vendetta 24 HH Trem-1987 PRS Custom-1988 Fender Strat Plus-2016 Custom assembled Fender Strat-2013 Gibson SG Standard-1995 Gibson Les Paul Studio-1991 MIJ Ibanez RG570FM TB-2016 MIJ Ibanez RG655M SPM-2002 Bruno Traverso Custom "Tommy" Silky-2017 Kramer Baretta Special-2010 Simon & Patrick Woodland CW acoustic

rabidgerry

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Re: MP-1 got Noisy...
« Reply #31 on: Time Format »

Well it could be, if one (or more) high voltage caps were bad then you get hum.

May be that's what it was MJMP.  Now I've only done those on the tubeboard so would that still apply to those?

It was a crazy earth/ground type hum that was throughout the sound, then it got so bad you couldn't even hear guitar.  I really hope it was.  I'll complete the mod (it's only taken a year  :lol:) tomorrow!

I dam well forgot totake it to practice with me.  So I had to use the Rockmaster, which was having output issues.  However, I put in the old tubes again and I got all the output back!!!!!!!!!!!!!!!!  f*ck those tubes I bought they musta have been total shit.

I need some juicy harmonically rich, nice mid rangey tubes with nice gain!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The Chinese dirt tubes in the MP1 with MDRT and noise mod sound fantastic.

Then my stock MP1 - No mods has some tubes in there that are also great (not sure what?). 

Quietness is very similar to the modded version and the stock one, however the trim pots in the MDRT MP1 could do with being turned down a little since now there is more voltage and all that good stuff giving me more gain.

Thanks Iperfungus  :thumb-up: always need the luck
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"whadda ya want? we want Heavy Metal"

Guitars:1986 Westone Dimension IV, 1989 Korean Squier Fat Strat Silver Series, 1998 Korean Squier Fat Strat, MIM Fender Fat Strat - FR, Squier Stagemaster Deluxe - Thru Neck x 2, Squier Stagemaster 22 Fret - 1st Gen, 1999 Squier Showmaster - Anniversary Edition, Squier Showmaster, Tokai FV40 Flying V

Effects:  Ada Mp1, Peavey Rockmaster, Boss GX700 Boss SX700 * Amps:   Rocktron Velocity 300 - Harley Benton GPA400
Cabs: 4 x Bugera 2 x 12"

MarshallJMP

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Re: MP-1 got Noisy...
« Reply #32 on: Time Format »

Got this problem before, those caps are getting old + they get a much higher voltage on them so they wear out, and at point it's over and out. So now you're good for at least 10 years.
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rabidgerry

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Re: MP-1 got Noisy...
« Reply #33 on: Time Format »

can't really reply to that any other way than  :thumb-up:

So the MDRT perhaps speeded up the death of those caps, ok makes sense  :)
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"whadda ya want? we want Heavy Metal"

Guitars:1986 Westone Dimension IV, 1989 Korean Squier Fat Strat Silver Series, 1998 Korean Squier Fat Strat, MIM Fender Fat Strat - FR, Squier Stagemaster Deluxe - Thru Neck x 2, Squier Stagemaster 22 Fret - 1st Gen, 1999 Squier Showmaster - Anniversary Edition, Squier Showmaster, Tokai FV40 Flying V

Effects:  Ada Mp1, Peavey Rockmaster, Boss GX700 Boss SX700 * Amps:   Rocktron Velocity 300 - Harley Benton GPA400
Cabs: 4 x Bugera 2 x 12"

MarshallJMP

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Re: MP-1 got Noisy...
« Reply #34 on: Time Format »

can't really reply to that any other way than  :thumb-up:

So the MDRT perhaps speeded up the death of those caps, ok makes sense  :)

Yeah since the MDRT is putting 40V more then the original tranny.
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