I have a set that is only a little over a month old that I am running Bi amped with 75W rms @ 4 Ohm in Stereo Hi pass filter on set per polks spec's with the gain at just abovr half no loudness on and todau blew a tweeter. I am wondering why if anyone knows what would cause it. I checked everything to see if anything was bare or touching losse anything but it's not. anyone know what could Cause this????