A bud of mine has a smoked Bag End S15-D cabinet that I got to examine at a gig. The DCR of the voice coil is still intact, but the cone won't move by hand. Hooking it up to my rig at low power demontrated how trashed it is... awful buzzing and grinding. The Bag End tech support figures the driver was over driven and melted the voice coil in the gap, hence the inability to move the cone by hand. A cursory calculation of the cabinet and port dimensions leads me to believe the cab is tuned around 70 Hz for a net internal volume of 1.79 cubic feet. The T/S data for the driver indicates it is suited for 3.5 cubic feet or larger. The squished cabinet will give it the classic Carvin/Eden hump around 100 Hz, and the resulting rapid rolloff in bottom end. I'm hoping to get the cabinet on the test bench after it is repaired. If the cab is actually tuned this high, I suspect the driver was munched by over powering the cab below 70 Hz. My buddy has numerous 5-string basses, so I suspect this is the cause of the destruction.