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Voodoo modded treadplate module

 
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DSY55
RM20


Joined: 14 Jan 2018
Posts: 2

PostPosted: Fri Jan 19, 2018 4:06 pm    Post subject: Voodoo modded treadplate module Reply with quote

Hello everyone! I havenít been into MTS in quite a while. I have an RM 50 and RM 100. I had the treadplate modded a long time ago from voodoo amps. Itís gain is way over the top. The bottom end is a bit flabby and not defined. Iím looking to pull some of the gain and tighten the low end a but. Maybe get rid of some lows. First off there a small potentiometer on the board soldered in place of a resistor. Not sure what it adjusts. Anyone have an idea on where to start on the board to drop the gain down a bit? I like my ultra xl I modded myself but like I said Iíve not messed with these modules in years and am rusty on where to start with the circuit. Thanks for any help!
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guitarzan
Donating Member


Joined: 26 Feb 2010
Posts: 311

PostPosted: Fri Jan 19, 2018 7:04 pm    Post subject: Reply with quote

I also have a voodoo modded treadplate. That little pot is actually the gain adjustment. It's pretty sensitive. I did back mine down a little bit and it tightened up the bottom end. Put a little mark on the pot where it's set now and then try taking down a smidge.
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Syn1, MOD50, M4, Hilly's RM100 modded to dual, RM4 modded to dual channel. G-Major 2, Mesa 20/20, Fryette Powerstation, Friedman Smallbox Combo, 1979 Marshall JMP 50 modded to BE/HBE by Friedman. Tons of modules.
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JKD
Donating Member


Joined: 03 Apr 2007
Posts: 4910
Location: NorCal

PostPosted: Fri Jan 19, 2018 7:24 pm    Post subject: Reply with quote

Lowering the value of the input coupling cap (c3?) will also drop the low-end

I like 500-1000pF (hopefully I got the unit right) Orange Drops
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Synergy - BE,HBE,DS,SLO,VH4,TDLX,Metro,Plexi
Salvation-Deadplate, Spawn, MarkUS, Dual Salvado+JJ Dirt+Terrier
JF-Dual MachX+ERect+MarkX
Gigmods - Mark
Hilly-Snorkeler
Egnater -COD
Randall - Brahma,Scary, Grail, GTO, SuperV


Last edited by JKD on Fri Jan 19, 2018 10:47 pm; edited 2 times in total
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DSY55
RM20


Joined: 14 Jan 2018
Posts: 2

PostPosted: Fri Jan 19, 2018 8:21 pm    Post subject: Reply with quote

Sounds good. Iíll try the mini pot. Its in the cap spot next to R11 on the board. Thereís a 472MPW cap in C3.
I know I made a bunch of notes on the mods for the modules I have but canít find them. I got excited seeing the synergy modules. I donít understand why modular tube amps didnít really take off like crazy. Itís a great idea although I think the modded modules I have from different designers all sound the same. Iím hoping the synergynones realynhave the character and Sound of the amps they are mimicking.
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Jinggoey
RM20


Joined: 01 May 2018
Posts: 2

PostPosted: Tue May 01, 2018 10:57 pm    Post subject: Reply with quote

I would like to say that I feel very good here.
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