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Author Topic: ADA Mp-1 Classic Noisegate problems  (Read 2245 times)

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Rockhead!

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ADA Mp-1 Classic Noisegate problems
« on: Time Format »

So i just had one of my Classics serviced by MJMP but alas there is an issue with the noisegate which hasn't been resolved.  Long story short......It still makes a popping static sound when a note is fretted on tube dist settings, which is very noticeable as the gate kicks in and shuts off the excess buzz and hum.  I know that for a fact that there is definitely something wrong here, as i did a midi dump via my other Classic which doesn't  have this problem, nor does my mp-2.  When the gate shuts off the note on those 2 other preamps there's NO pop!  I also tried the faulty Classic with another set of tubes to see if this could be causing the issue, but this wasn't the case.  I have also run a test  bypassing the Classic's ng and used it with an external one which i currently use with my JMP-1 and stock MP-1.   Low and behold NO pop, so I can safely say that i am 100% satisfied that the internal gate on this Classic is at fault!  I know that ng's are not to everyones taste, but personally they are a must for me.  Sure i could use an external gate, but it's not the point and i would prefer to get this issue fixed.  Has anyone on here come across this problem with the Classic and has it been resolved, if so how and what cap's, diodes or rams were replaced?
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Gear

Mp-1, 2x Mp-1 Classics, Mp-2, JMP-1, mc-1, mpc, Art Ultrafoot, 4x Intellifex, 3x Digitech Ips 33b, Digitech Dhp 33, 3x Bbe sonic Maximizers, 2x Art Alpha's, 2x Art Sgx & Drx, Digitech Trs 12, Digitech Legend and a whole bunch of other stuff that's far too long to list!

Guitars

Ibanez Jem 777 VSK (Super Clean and Super rare)
Ibanez Jem 77 GMC
Ibanez Jem 77FP
Fender SRV Strat
Fender Mag 7 Elite USA Strat Flame top 2 tone sb, custom 16" Radius ss Frets
Fender 40th Anniv USA Strat 2 tone sb
Fender 50th Anniv USA Strat Flame top 3 tone sb
Fender 60th Anniv USA Strat 2 tone sb
Fender American STD USA Strat 3 tone sb
Fender American Elite Telecaster tsb

Dante

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #1 on: Time Format »

Welcome to the Depot Rockhead!

If anyone can diagnose this problem, it's MJMP. I use my Classic as my main rig, but I can honestly say I have not heard what you're describing. I'm gonna keep an eye on this thread to see what it is. Again, welcome!  :waving-banana-smiley-emoticon

Dante
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ADA Gear: MP-1 Classic | MP-2 | Viper Combo | MicroTube 200 | MicroFet | MXC w/Quad Switch

rnolan

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #2 on: Time Format »

Hey Rockhead, welcome to the depot  :wave: . Well MJMPs your man as Dante says...  I'm wondering if it has anything to do with (is similar in any way) to the MP-2 noise gate chatter problem which required a new resistor to fix way back.. As you say, there is definitely an issue.
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Studio Rig: MP2/MB1 > Eurorack UB2442FX-Pro > TC M-One XL > Behringer Truths (with Truth Sub) / QUAD ESL 63s
Live Rig: MP2/MB1 > Alesis Quadverb > Alesis Midiverb 4 > Yamaha AM802 > B200s/Carvin TS100/DCM200L > ADA Split Stacks/Mesa P112s

MarshallJMP

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #3 on: Time Format »

Well we agreed he will ship it to me so I can fix.And I'm working on an MP-2 (from Yaron who's on tour in Belgium) where the gate (and wah) doesn't work (unless you set the threshold below 8) so I'm learning a lot from this when it comes to ADA gates. The gate of the classic and the MP-2 are almost the same but the classic has a more simplified version.
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Rockhead!

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #4 on: Time Format »

Thanks to everyone for the warm welcome!  MJMP has kindly offered to take another look at it for me.  He thinks that it could well be the cap which guverns the opening and closing of the gate will need replacing (possibly on it's way out) so fingers crossed that should resolve the problem.  The pop appears to be most noticable with left hand/muted dead notes on dist settings above 8.5 when one can really hear it as the gate closes.  It's really bugging me to say the least.  I'm sure the main man will fix it though. :)
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Gear

Mp-1, 2x Mp-1 Classics, Mp-2, JMP-1, mc-1, mpc, Art Ultrafoot, 4x Intellifex, 3x Digitech Ips 33b, Digitech Dhp 33, 3x Bbe sonic Maximizers, 2x Art Alpha's, 2x Art Sgx & Drx, Digitech Trs 12, Digitech Legend and a whole bunch of other stuff that's far too long to list!

Guitars

Ibanez Jem 777 VSK (Super Clean and Super rare)
Ibanez Jem 77 GMC
Ibanez Jem 77FP
Fender SRV Strat
Fender Mag 7 Elite USA Strat Flame top 2 tone sb, custom 16" Radius ss Frets
Fender 40th Anniv USA Strat 2 tone sb
Fender 50th Anniv USA Strat Flame top 3 tone sb
Fender 60th Anniv USA Strat 2 tone sb
Fender American STD USA Strat 3 tone sb
Fender American Elite Telecaster tsb

Rockhead!

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #5 on: Time Format »

Big shout out to MJMP for fixing this problem with the noisegate.  I'm sure there isn't any ADA gear he can't fix!
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Gear

Mp-1, 2x Mp-1 Classics, Mp-2, JMP-1, mc-1, mpc, Art Ultrafoot, 4x Intellifex, 3x Digitech Ips 33b, Digitech Dhp 33, 3x Bbe sonic Maximizers, 2x Art Alpha's, 2x Art Sgx & Drx, Digitech Trs 12, Digitech Legend and a whole bunch of other stuff that's far too long to list!

Guitars

Ibanez Jem 777 VSK (Super Clean and Super rare)
Ibanez Jem 77 GMC
Ibanez Jem 77FP
Fender SRV Strat
Fender Mag 7 Elite USA Strat Flame top 2 tone sb, custom 16" Radius ss Frets
Fender 40th Anniv USA Strat 2 tone sb
Fender 50th Anniv USA Strat Flame top 3 tone sb
Fender 60th Anniv USA Strat 2 tone sb
Fender American STD USA Strat 3 tone sb
Fender American Elite Telecaster tsb

Dante

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #6 on: Time Format »

+1  :thumb-up:

What was the culprit? That resistor pumping out 3 million gigawatts?
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ADA Gear: MP-1 Classic | MP-2 | Viper Combo | MicroTube 200 | MicroFet | MXC w/Quad Switch

MarshallJMP

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #7 on: Time Format »

Replaced the opamp, a few caps and a diode. That seemed to do the trick.

Now the resistor is pumping out just 1.1 Gigawatt into the flux capacitor  :D
« Last Edit: Time Format by MarshallJMP »
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Kim

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #8 on: Time Format »

Replaced the opamp, a few caps and a diode. That seemed to do the trick.

Now the resistor is pumping out just 1.1 Gigawatt into the flux capacitor  :D

Good call.  I would've attempted to reverse the polarity of the neutron flow.....   :D
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RIG OF FIRE:  ADA MP-2, Rocktron Xpression, Peavey Classic 60/60, Gator pedalboard, Rolls MidiBuddy, Dunlop 95Q wah.
Mellotron/organ section:  EHX Mel9, EHX C9, Saturnworks A/B switch, Vox V860 volume, Crate Powerblock.
Three 4x12 cabs:  all custom wired for both 2x12 guitar and 2x12 Mel9. UPDATED DIAGRAMS
HOME/STUDIO/COMBOS/STUFF:  Peavey JSX halfstack, Crate G60XL, Saturnworks Saturn Fuzz,  EHX Soul Food, ProCo Rat, Ibanez Smashbox, Saturnworks buffered splitter, Morley Tremonti wah, Peavey PV6, Korg DTR-1000, ADA MPC.
GUITARS:  Jackson KE3-DiMarzio Breed/PAF Pro, Jackson KE3-DiMarzio Breed/PAF Pro, Silvertone P-bass, '70s Gretsch Dorado acoustic.
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rnolan

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #9 on: Time Format »

Replaced the opamp, a few caps and a diode. That seemed to do the trick.

Now the resistor is pumping out just 1.1 Gigawatt into the flux capacitor  :D

Good call.  I would've attempted to reverse the polarity of the neutron flow.....   :D
Which probably would have worked down here in the southern hemisphere  :lol:   Mmm maybe that's why Australian rock sounds so good, we are out of phase... LoL
Hey Rockhead!, glad you got it sorted (well MJMP did but you know what I mean) :thumb-up: :whoohoo!:
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Studio Rig: MP2/MB1 > Eurorack UB2442FX-Pro > TC M-One XL > Behringer Truths (with Truth Sub) / QUAD ESL 63s
Live Rig: MP2/MB1 > Alesis Quadverb > Alesis Midiverb 4 > Yamaha AM802 > B200s/Carvin TS100/DCM200L > ADA Split Stacks/Mesa P112s

MarshallJMP

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #10 on: Time Format »

Replaced the opamp, a few caps and a diode. That seemed to do the trick.

Now the resistor is pumping out just 1.1 Gigawatt into the flux capacitor  :D

Good call.  I would've attempted to reverse the polarity of the neutron flow.....   :D

You have to bee careful with that, it could blow up Australia ,they could get in phase that way  ;D
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rnolan

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #11 on: Time Format »

 :lol:
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Studio Rig: MP2/MB1 > Eurorack UB2442FX-Pro > TC M-One XL > Behringer Truths (with Truth Sub) / QUAD ESL 63s
Live Rig: MP2/MB1 > Alesis Quadverb > Alesis Midiverb 4 > Yamaha AM802 > B200s/Carvin TS100/DCM200L > ADA Split Stacks/Mesa P112s

Dante

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Re: ADA Mp-1 Classic Noisegate problems
« Reply #12 on: Time Format »

 :facepalm:
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ADA Gear: MP-1 Classic | MP-2 | Viper Combo | MicroTube 200 | MicroFet | MXC w/Quad Switch
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