Bam Series subwoofers deliver! this 3,500-Watt bamf Series 12″ Dual 2Ohm subwoofer from Power Acoustik is built to survive. It has an overcompensating motor structure for increased Magnetic strength, 12mm t-yoke & top plate improve low-frequency dynamics, Vented t-yoke & frame reduce voice-coil heat buildup & a nonmagnetic No Resonant die-cast aluminum frame. It also has a 3″ four-layer voice coil with direct-connect wire & high-temperature-tolerant adhesives. No transfer spruce pulp cone with UV & chemical protection, stitched & glued surround/cone joints & extended-excursion polyether foam surround with UV protection & Dual poly-cotton Suspension dampen Violent accelerations. The stitched voice-coil leads prevent potential damage as well. This subwoofer has an RMS of 1,750 Watts, a 3″ Dual 2Ohm voice-coil configuration & a 6″ mounting depth. It includes 1 gasket/trim ring with concealed mounting holes.