I personally think it was me and my music choices, electronica and hip hop, hooking them up to 275 watts also did not help. they do not buzz at normal listening levels and it wasn't even the deepest bass, but a frequency around 45-50 hz that caused it at loud volumes, I think the manual states they go down to 35 hz. The wire theory is a good one, I only checked the driver structure (Styrofoam drivers) for breaks or separation, played with them for a week looking for the problem with no luck. Whatever, I will use these as target practice for my shotgun if I have to move them more than one more time.