A friend of mine has an old Avatar cabinet, 212. Anyway, he gets litterally no sound out of it suddenly. It didnt make a pop or anything, just one day it quit all together. We replaced the crossover on it, but it still seems to be dead. Does anyone have a reasoning with this? PS. No because of an active bass, or a bad head, my Glock sound fine through the head, it is something with the cabinet.