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PlexiMods now on Twitter! 25 Jun 2010 | 04:19 am
I’ve opened a twitter account for PlexiMods which will automatically tweet with a link to any new site update. The address is http://www.twitter.com/pleximods, click follow to keep up with any site up...
Draining The Filter Caps 28 Feb 2010 | 11:31 am
DO NOT touch anything inside your amp chassis before doing this! In your amplifier the filter capacitors (the large cans that stick on top of the chassis, sometimes the preamp one is board mounted) s...
Bleeder Resistors 28 Feb 2010 | 11:19 am
One useful modification to add to an amp is to add 330k resistors in parallel to ground with all your can filter capacitors. By adding these the voltage automatically drains from the filter capacitors...
Tone Stack Lift 28 Feb 2010 | 11:17 am
If you’ve ever heard of ‘no-load tone controls’ or removing tone controls completely for a guitar, this mod is pretty similar, but for an amp. Basically it involves lifting the wire going from the mid...
Switchable Tone Stack 28 Feb 2010 | 11:15 am
The two main tone stacks used by Marshall over the years was first the 56k slope resistor and 250pf capacitor combination – this was used exclusively until 1968 on all their amps. Later on Marshall st...
Connecting a Marshall reissue effects loop 27 Feb 2010 | 05:02 pm
Whether you’ve installed a Metroamp PTP board in your amp instead of the printed circuit board, or you’ve bought one of the Marshall effects loop boards separately from your local Marshall distributor...
Ralle’s Setup 27 Feb 2010 | 04:47 pm
Ralph Peterson’s (Ralle’s) Gear Ralle’s Website
JTM Series Gallery 27 Feb 2010 | 04:26 pm
Hendrix’s #1 Amp, the ‘Dickinson 45/100′ click the thumbnails to enlarge the images JTM Series board – JTM Board – courtesy of George from Metroamp.com JTM 100 main board – JTM 100 Circuit Board – ...
Super Lead / Bass Diagrams 27 Feb 2010 | 04:15 pm
(Plexi / Metalface) EVH 12000 Series Marshall Here’s 3 simultaneous diagrams of an EVH type 100w Marshall in a moving .gif image format by Mike Cicciari, keep an eye out for the different component ...
Super Lead / Bass Schematics 27 Feb 2010 | 04:13 pm
(Plexi / Metalface) #1959 100w Super Lead (Marstran.com) click image to enlarge #1987 50w Super Lead (Marstran.com) click image to enlarge #1992 100w Super Bass (Marstran.com) click image to enl...
