micogit Posted July 30, 2022 Share Posted July 30, 2022 Hello, When I change by hand bass knob it moves to the correct position but then after one second it always changes by itself to the position of drive knob(if drive is set to 9 o'clock then the bass knob changes automatically to 9 o'clock) What can cause this problem? Thanks Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 1, 2022 Share Posted August 1, 2022 Carefully pull up the knobs, make certain the retainer nuts underneath are snug. Loose nuts can result in an intermittent chassis ground connection. Quote Link to comment Share on other sites More sharing options...
Walker32W Posted December 31, 2022 Share Posted December 31, 2022 If I remember correctly this is a common problem with these amps, the volume control is just very loose and the vibrations from the amp actually move it on it’s own. I might be mistaken though, wouldn’t hurt to have it looked at by someone. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted January 4, 2023 Share Posted January 4, 2023 It's a threshold thing between the tube threshold and where the volume control kicks in. Similar to the junction threshold point in a transistor. Quote Link to comment Share on other sites More sharing options...
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