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

ADA Preamps => MP-2 => Topic started by: rnolan on January 01, 2015, 11:27:02 PM

Title: MP2 Noise Mod Parts
Post by: rnolan on January 01, 2015, 11:27:02 PM
MJMP has added the MP2 noise mod parts to his site http://www.marshalljmpmodshop.net/miscellaneous_parts_and_replacement_tubes.htm (http://www.marshalljmpmodshop.net/miscellaneous_parts_and_replacement_tubes.htm), 1 resistor and 21 high quality caps. You need good soldering and de-soldering skills for this mod.
Title: Re: MP2 Noise Mod Parts
Post by: WAR_in_D on January 02, 2015, 05:31:07 AM
MJMP has added the MP2 noise mod parts to his site (http://www.marshalljmpmodshop.net/miscellaneous_parts_and_replacement_tubes.htm), 1 resistor and 21 high quality caps. You need good soldering and de-soldering skills for this mod.

Nice, MJMP sent me an email with that information and I'm planning on getting one sometime after the weekend is over.  With the holidays, been running around like a chicken with my head cut off but should slow down next week.

Good information.  :thumb-up:
Title: Re: MP2 Noise Mod Parts
Post by: rnolan on January 02, 2015, 05:55:54 AM
Know what you mean, fortunately I've  been having fun with th new JPP LP...
Title: Re: MP2 Noise Mod Parts - 2022 update
Post by: Shibiwan on January 27, 2022, 11:40:33 PM
At the request of a couple of you on this board, here's an update to the noise mod, reducing the variety of parts needed if you are ordering them in small batches of components off Amazon.com

Here's the original noise mod plans and instructions:
http://adadepot.com/mods/MP-2-NoiseMod.pdf (http://adadepot.com/mods/MP-2-NoiseMod.pdf)

First, here are the changes I made:
These two substitutions above reduced the number of DIFFERENT components by 2.
This resulted in a further reduction in the number of different parts by 1

Original parts list  (10 different parts)

NEW PARTS LIST (7 different parts)

IMPORTANT NOTE: When ordering parts, please take note of the sizes of components. Most of the newer capacitors are smaller then the ones they are replacing, but in cases of uprating/upsizing, some components may end up slightly larger. Make sure you don't end up with one that is too big or too tall to fit in the space on the main circuit board.

Also while you're in there, you may want to attempt to swap out the soldered battery with a vertical battery holder (https://www.amazon.com/Shapenty-Plastic-Vertical-Battery-Sockets/dp/B071F3HW8J) and modding the battery holder like this with the leftover cut capacitor leads:
(https://i.imgur.com/cKQHqHT.png)

(https://i.imgur.com/fuzZtII.png)

...then soldering it on the main board:
(https://i.imgur.com/KvLmlfE.png)

Bonus! Leftover parts to have handy.  :lol:
(https://i.imgur.com/uNXsm6v.png)
Title: Re: MP2 Noise Mod Parts
Post by: rnolan on January 28, 2022, 06:33:02 PM
Excellent  :thumb-up: , thanks for posting this  :wave: