yesterday during the playing very loud buzzing came from my hafler p3000 amp, and the speakers was moving in high amplitude. I disconected the speakers, but after switching on the amp was buzzing again. I checked the power cable (it's ok). I'm also afraid that I blew my speakers too 'cause I noticed very strange smell of sylicone or glue coming from speakers (maybe from horn). I played it bridged and connected to 8ohm 2x12" bass cabinet (400W RMS). During 6 months of playing I replaced 2 fuses (according to manuals T2.5A). Help me to locate the problem.