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Temp "Time Format" issue Fix in Discussions

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Author Topic: Distortion problems w/ ADA MP1 Classic  (Read 1223 times)

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Scheshevski

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Hi, I was wondering if anyone know of, or have had any problems with the Classic regarding low distortion levels, and have any solutions to those problems? I own or have owned the original MP1, one 3TM and one Voodoo mod and a Marshall JMP-1. I have also tested at least three other MP1s and the distortion on my Classic is nowhere near the levels of any of the other gear, not even close. Without some boost, it is "dead as disco". With a distortion pedal, the thing comes alive. I'm not talking any heavy distortion since I usually use ODs 1 & 2 at 4.0-5.0 on the original, but the Classic doesn't produce even that level of distortion.

Another thing; when using the Clean Tube channel, there is a "hissing sound" until volumes is up at 9.5 and more. It isn't possible to use at levels under 9.5 due to the "hiss".

Any thoughts?
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"Well, I don't know - wh-wh-... what're the hours?"

Guitars;
- Piece o shit modified Harley Benton w/ Tiger paint, Shaller whammy, Dimarzio Tone something and scalloped fretboard.
- Warmoth soloist w/ walnut body and ebony neck, reverse head stock and Dimarzio Air something n/b humbuckers.
- Warmoth VIP w/ blue transparent finish and n/b Duncan humbuckers.
- Warmoth YJM strat w/ 22 frets
- Warmoth Strat w/ Screamin Demon and Cool Rail
- Tokai Les Paul made in Japan w/ Duncan Full Shred and 59.
- Squier strat made in Japan w/ Duncan 59 in the bridge
- Piece o shit black strat w/ hot rails

Amps;
- ADA MP-1 Stock
- ADA MP-1 Stock
- ADA MP-1 3TM
- ADA MP-1 Classic
- Marshall JMP-1 w/ Folkesson mod
- Mesa 20/20 power amp
- Marshall MG 10

Cabs;
1x12 Mesa Thiele
1x12 Mesa Thiele

Effects;
- TC G-Major
- Alesis Midiverb 4
- Digitech RP 500

Floor board;
Piece o shit FCB1010 that is used for changing midi channels only, because, well you know if you ever tried one :-)

Tuning Eb, strings 9-46, picks 1,5mm Dunlops

And then a bunch of stuff like Eq, Hush, BBE, distortion pedals and such. I have a Precision copy and a Warwick combo but usually don't play bass, Shure/Sennheiser mics for backup vocals.

MarshallJMP

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Re: Distortion problems w/ ADA MP1 Classic
« Reply #1 on: Time Format »

Start with replacing R151.
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Scheshevski

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Re: Distortion problems w/ ADA MP1 Classic
« Reply #2 on: Time Format »

They said the colors should be Brown, Green, Yellow and Gold for the 150K part buy I don't seem to find such combination. Am I missing something?
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"Well, I don't know - wh-wh-... what're the hours?"

Guitars;
- Piece o shit modified Harley Benton w/ Tiger paint, Shaller whammy, Dimarzio Tone something and scalloped fretboard.
- Warmoth soloist w/ walnut body and ebony neck, reverse head stock and Dimarzio Air something n/b humbuckers.
- Warmoth VIP w/ blue transparent finish and n/b Duncan humbuckers.
- Warmoth YJM strat w/ 22 frets
- Warmoth Strat w/ Screamin Demon and Cool Rail
- Tokai Les Paul made in Japan w/ Duncan Full Shred and 59.
- Squier strat made in Japan w/ Duncan 59 in the bridge
- Piece o shit black strat w/ hot rails

Amps;
- ADA MP-1 Stock
- ADA MP-1 Stock
- ADA MP-1 3TM
- ADA MP-1 Classic
- Marshall JMP-1 w/ Folkesson mod
- Mesa 20/20 power amp
- Marshall MG 10

Cabs;
1x12 Mesa Thiele
1x12 Mesa Thiele

Effects;
- TC G-Major
- Alesis Midiverb 4
- Digitech RP 500

Floor board;
Piece o shit FCB1010 that is used for changing midi channels only, because, well you know if you ever tried one :-)

Tuning Eb, strings 9-46, picks 1,5mm Dunlops

And then a bunch of stuff like Eq, Hush, BBE, distortion pedals and such. I have a Precision copy and a Warwick combo but usually don't play bass, Shure/Sennheiser mics for backup vocals.

MarshallJMP

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Re: Distortion problems w/ ADA MP1 Classic
« Reply #3 on: Time Format »

R151 is a 180k, brown gray yellow gold, you can see it next to the green cap.
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Scheshevski

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Re: Distortion problems w/ ADA MP1 Classic
« Reply #4 on: Time Format »

Alright, I changed the part and it didn't help. The hiss is still there and the gain is not much to write home about. :-(
Logged
"Well, I don't know - wh-wh-... what're the hours?"

Guitars;
- Piece o shit modified Harley Benton w/ Tiger paint, Shaller whammy, Dimarzio Tone something and scalloped fretboard.
- Warmoth soloist w/ walnut body and ebony neck, reverse head stock and Dimarzio Air something n/b humbuckers.
- Warmoth VIP w/ blue transparent finish and n/b Duncan humbuckers.
- Warmoth YJM strat w/ 22 frets
- Warmoth Strat w/ Screamin Demon and Cool Rail
- Tokai Les Paul made in Japan w/ Duncan Full Shred and 59.
- Squier strat made in Japan w/ Duncan 59 in the bridge
- Piece o shit black strat w/ hot rails

Amps;
- ADA MP-1 Stock
- ADA MP-1 Stock
- ADA MP-1 3TM
- ADA MP-1 Classic
- Marshall JMP-1 w/ Folkesson mod
- Mesa 20/20 power amp
- Marshall MG 10

Cabs;
1x12 Mesa Thiele
1x12 Mesa Thiele

Effects;
- TC G-Major
- Alesis Midiverb 4
- Digitech RP 500

Floor board;
Piece o shit FCB1010 that is used for changing midi channels only, because, well you know if you ever tried one :-)

Tuning Eb, strings 9-46, picks 1,5mm Dunlops

And then a bunch of stuff like Eq, Hush, BBE, distortion pedals and such. I have a Precision copy and a Warwick combo but usually don't play bass, Shure/Sennheiser mics for backup vocals.

Iperfungus

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Re: Distortion problems w/ ADA MP1 Classic
« Reply #5 on: Time Format »

Did you test different tubes there already?
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On the run again!

ADA MP-1 (modified by MJMP)
Marshall JMP1
TC Electronic G Major
Alesis Quadraverb GT
Zoom 9150
Advance Tube Technologies TA '70 tube power amp
Marshall Valvestate 8008 power amp
ADA B200s power amp
Behringer FCB1010 MIDI controller
Zoom 8050 MIDI Controller
Zoom FP01 Expression pedal
Blackstar HTV 212 stereo cabinet with 70/80 Celestion speakers
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


1987 PRS Custom
1988 Fender Strat Plus
2014 Fender Modern Player Strat
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

Scheshevski

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Re: Distortion problems w/ ADA MP1 Classic
« Reply #6 on: Time Format »

Yes, changing the tubes didn't work. :-(
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"Well, I don't know - wh-wh-... what're the hours?"

Guitars;
- Piece o shit modified Harley Benton w/ Tiger paint, Shaller whammy, Dimarzio Tone something and scalloped fretboard.
- Warmoth soloist w/ walnut body and ebony neck, reverse head stock and Dimarzio Air something n/b humbuckers.
- Warmoth VIP w/ blue transparent finish and n/b Duncan humbuckers.
- Warmoth YJM strat w/ 22 frets
- Warmoth Strat w/ Screamin Demon and Cool Rail
- Tokai Les Paul made in Japan w/ Duncan Full Shred and 59.
- Squier strat made in Japan w/ Duncan 59 in the bridge
- Piece o shit black strat w/ hot rails

Amps;
- ADA MP-1 Stock
- ADA MP-1 Stock
- ADA MP-1 3TM
- ADA MP-1 Classic
- Marshall JMP-1 w/ Folkesson mod
- Mesa 20/20 power amp
- Marshall MG 10

Cabs;
1x12 Mesa Thiele
1x12 Mesa Thiele

Effects;
- TC G-Major
- Alesis Midiverb 4
- Digitech RP 500

Floor board;
Piece o shit FCB1010 that is used for changing midi channels only, because, well you know if you ever tried one :-)

Tuning Eb, strings 9-46, picks 1,5mm Dunlops

And then a bunch of stuff like Eq, Hush, BBE, distortion pedals and such. I have a Precision copy and a Warwick combo but usually don't play bass, Shure/Sennheiser mics for backup vocals.

MarshallJMP

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    • marshalljmpmodshop.net
Re: Distortion problems w/ ADA MP1 Classic
« Reply #7 on: Time Format »

What's the voltage on the testpoint next to Q34 ( says 200V)?
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