Marshall JCM800 2203x Service - COLD BIAS & CROSSOVER DISTORTION!!



Published
A 2004 2203x reissue has come in for a service, it's sounding pretty thin and has a nasty distortion which is quite evident when playing softly. This clip details the full procedure on the bench to identify and rectify, along with some time on the oscilloscope to discover what cold and warm bias settings do to your power section.

0:00 Play in - post service
1:06 Intro
3:25 Cold vs. warm bias. A/B tone test.
4:35 At the bench
15:33 On the scope
19:37 Outro

https://headfirstamplification.com
Category
Audio
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