my cab is not working and im not sure what happened. I did the battery test on the speaker itself and the speakers pumped. i then decided to do the battery test again but instead i plugged a speaker cable in the input jack on the cab and did the test again and nothing at all. i then plugged the cab to a different amp and the tweeter worked but the speakers didnt. i dont get whats wrong? my amp never clipped once so i dont know how they blown if they blew. its an 8 ohm cab and my amp can go up to a 4 ohm load. any insights as to whats wrong?