Go Back > The Amps > The Workbench
LIKE MarshallForum on Facebook FOLLOW MarshallForum on Twitter
Thread Tools Display Modes
Old 03-17-2009, 05:17 PM   #1
Junior Member
Join Date: Feb 2009
Posts: 9
4212 Combo JCM 800 mod ?

Can anybody tell me what this mod is or does? It comes off link 1 to a 1n914 diode. It is comprised of a 1uf electrolytic cap 63v with a resistor in parallel?My guess is that it has something to do with the gain or channel switching?
BTW great forum!!!
Attached Images
File Type: jpg IMG_0087.jpg (85.4 KB, 20 views)
plato58 is offline   Reply With Quote
Old 03-29-2011, 01:23 PM   #2
Junior Member
Join Date: Mar 2011
Posts: 16
Re: 4212 Combo JCM 800 mod ?

my guess would be to keep the highs when the knob it turned down but not sure. very curious since I have the same amp
squireno7 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 07:21 PM.

Find us on Facebook!   Follow us on Twitter!

Our Network: PRS Guitar Forum | Luthier Forum | SG Guitar Forum | Les Paul Forum | Music Gear Forum | 7 String Guitar Forum | Acoustic Guitar Forum

MarshallForum proudly supports St. Jude Children's Research Hospital

Copyright © 2005-2016, All Rights Reserved.