OK so here is the deal....I have just gone through my 5th pair of different subs on this amp and i dont get it. First pair were some old ****y MTX Roadthunders dual 4ohms. second pair were Rockford R1's dual 2ohms, third and fourth pair were Alpine sws-1223d dual 2 ohms, fifth pair were rockford P1's single 4ohms. all subs were wired to 2 ohms. the amp is a Alpine MRD-m605 its stable to 2ohms. HU is a Sony XNV-660bt 4v preouts. Amp gains set to match the preouts and ALL subs properly broken in. ALL subs got extremely hot to the touch before blowing or part ways blowing. i know that the subs VC are all thermaled but i dont get why. No bass boost on and the amp isnt clipping....could it be just a bad amp? BTW amp is rated at 600rms at 2ohms