Whats up guys! So i think i might have a blown speaker but im not sure. My bass cab was at a practice spot for quite some time. Alot of bands practiced there. I was letting a friend use it. And ive had it home for a while now. I plugged it in today. And i notice i get a clipping ish vibrating sound from the cab when i turn on The ultra low setting on my head. And now im starting to think a speaker or two might be blown. But i dont know. I bought this cab new. Its not even a year old Ampeg 8x10. Ill post a vid demonstrating before i select the ultra low and after. Im not sure if it would clip i if i just turned it up higher with ought the ultra low because i cant turn my cab up too loud because i live in apartments. Link is below on comments.