ADA Depot - A Forum To Support Users of ADA Amplification Gear

Please login or register.

Login with username, password and session length
Advanced search  

News:

Need a Schematic? Check the Vault *MP-1 Classic Schematics Just Added!!

Pages: [1]   Go Down

Author Topic: ADA MP2 Noise mods  (Read 5271 times)

0 Members and 1 Guest are viewing this topic.

mikeskory

  • Newbie
  • *
  • Offline Offline
  • Posts: 2
ADA MP2 Noise mods
« on: Time Format »

4/13/2017  I'm doing the 1st of 2 mods on the MP2.  http://adadepot.com/mods/MP-2-NoiseMod.pdf

Doing the R913, C333 etc area now.  Can anyone confirm that this woks to eliminate the "squeel"? :banana-guitar:
Logged

rnolan

  • Administrator
  • Superhero Member
  • ******
  • Offline Offline
  • Posts: 5998
Re: ADA MP2 Noise mods
« Reply #1 on: Time Format »

Hey mikeskory, in many cases it does fix the squeal, but as I posted before, depends what's causing it.  But it will definitely help reduce noise and not hurt anything to do it.  Did you measure the test point first ?
Logged
Studio Rig: Stuff; Live Rig: More Stuff; Guitars: A few

Harley Hexxe

  • Superhero Member
  • ******
  • Offline Offline
  • Posts: 1965
Re: ADA MP2 Noise mods
« Reply #2 on: Time Format »

Good point Richard!

    Maybe try swapping the tubes positions in the MP-2 first. If the V1 is pushing harder than V2, that can cause a squeal in high gain settings.
Logged
I only have two brain cells left, ...and I'm saving them for the weekend!

rnolan

  • Administrator
  • Superhero Member
  • ******
  • Offline Offline
  • Posts: 5998
Re: ADA MP2 Noise mods
« Reply #3 on: Time Format »

Good advice Harley  :thumb-up: Also as posted before (in previous thread) check your input jack, it is often the culprit and they ware out (this is worth doing regardless), remember to check the thread length, the MP-2 jack is longer thread than standard jack
Logged
Studio Rig: Stuff; Live Rig: More Stuff; Guitars: A few

MarshallJMP

  • Superhero Member
  • ******
  • Offline Offline
  • Posts: 4702
    • marshalljmpmodshop.net
Re: ADA MP2 Noise mods
« Reply #4 on: Time Format »

If it's the jack then the squeel only happends when nothing is plugged in.
Logged
Pages: [1]   Go Up