Are these the LS801's? Are you finally talking about the one with the mismatched driver that I have been asking you about for months? We all gave you advice on having the original driver re-coned when it first went out on you. Would most likely cost under $200.00 to recone with a factory recone kit. What did you do with the original woofer that was in that box.
You do know that the engineers matched that particular driver to that particular cabinet for a reason, don't you? You can't just throw any 18in woofer in there and expect it to perform like the original.