MODEL 543 AMP VOLUME PROBLEM Apr 18, 2019 2:54:25 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by vaguy222 on Apr 18, 2019 2:54:25 GMT Hello all does anyone have an idea why a model 543 amp has volume go up and down as if the avc is overacting? can it be defeated as per some Seeburg amps? Thanks in advance Norman