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Posted by frank
on 24/7/2003, 11:01 pm
I have a JCM 800 4104 2X12 50 watt combo amp. I keep the preamp volume at "10" and when I turn the master volume to about "6" or "7" the amp has a very low deep loud fedback. I have replaced the tubes and tried that and it did nothing but what I did notice is when I remove the back of the combo it sometimes doesnt do it or it does it to a much smaller degree. If anyone can help me to fix this PLEASE email me at: mfkd999@mail.com
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