saviogomes Posted April 14, 2019 Share Posted April 14, 2019 Hi, was wondering if someone could give some insight into a problem with my Marshall JCM900 combo. I was about to soundcheck the amp at a gig recently, clicked on a few pedals for checking the loud sound and the amp's volume suddenly dropped significantly. I could turn it up to a barely manageable stage volume at around the 8 mark, but there was still a slight horrible top end crackle, like a busted speaker or something. I tried changing the power tubes but it made no difference. Any amp techs out there got any vague ideas of what might be the problem? Quote Link to comment Share on other sites More sharing options...
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