Thanks Guys. Ya, I am sure the app isn't very accurate. It is loud but not Saturday night loud. Mojo...I agree, it does sound similar to the popping I have had when a sub is over extended, only at a higher frequency. I think maybe I will contact Axiom and perhaps drop it off. I would also like to get a couple of dented dust caps replaced if it isn't a major deal to do so.

LFR 1100s QS8s QS2s ADA15000-4, VP 150, M 3s,Polk CSI A6, Klipsh B10B, SVSPB2000,PSW125x2