Bought some great shape 901s (for my dad), which have apparently been refoamed.
Hook them up, and anything with bass it buzzy distorted. Yes the EQ is hooked up. It seems like the 1 of the speakers in the back of each of the cabs, is either totally blown, or did not get refoamed right. Any tips on how to tell, they all look the same? Also what are the chances of the same speaker(location) in each cab getting blow? When looking from the back it seems to be the lower most left speaker(s). Any tips?