Hey guys, I had a question for all you amp and electronic gurus out there. I was at band practice the other night and flipped on the half stack and heard a strange kinda rattling noise. Im no expert, but i think one the speakers are blown in my 4x10. My amp is the berhringer bx4500, it claims it puts out 450 watts, but berhringer always lists their peak wattages instead of the more accurate RMS wattage. The cab i was running into is an Ampeg SVT 410 He, the one that says classic on the bottom right of the grill. The cab is wired for eight ohms and the power handling on the back says 500 watts. My question is how could the speakers have gotton damaged? the head is 4 ohms, so its not even using all its power. Could it be the voice coil?