Re: M3 - Low frequency sound while swelling the volume pedal
Totally guessing, does the organ have a spring reverb unit? These can generate rumble when vibrated... If so, the rubber mounts could be bad or there could be a bias from the expression pedal due to a bad coupling capacitor. If this bias is sent to a reverb, it may saturate the magnetic driver.
Re: M3 - Low frequency sound while swelling the volume pedal
No there is no reverb.</p>
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It's really a rumble but you can hear a low frequency tone that follows you foot movement... It's probably from the pedals because the legato is acting funny on the pedals. I've decided to replace all capacitor I can find on this amp and then I'll do the lamps...There's no more thans 20-30$ of caps anyways...
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