bass amp farting out
Posted: April 6th, 2012, 6:46 pm
i picked up a vintage randall RBA 500 bass head about a month ago and during soundcheck before a gig i was having some farty sound. i thought it was a blown speaker but ive got it hooked to the cab and turned down now. no matter what i set the gain or volume to the signal distorts if you play hard enough. in my other amps, i cant get the same effect so its my understanding that amps are supposed to sound clean no matter the signal level (to a logical extent of course). im not sure whether ive got a cap going out (this amp was made in 1981), or if i needs to do some serious pot cleaning, but i cant use this rig until this problem is fixed.. ive got a gig may 5th and i need an amp to play through.. any help?