10" Dual 4 ohm Punch Stage 3 Subwoofer Power Handling: Peak: 800 watts RMS: 400 watts Impedance: Dual 4 ohm Parabolic Triangular Geometry cone support system for reduced piston flex Kevlar Fiber reinforced semi-pressed paper cone and ABS/Acrylic dustcap Massive 57oz. magnet assembly increases excursion capability Compliant linear spider eliminates need for break-in period Precision cast from aluminum alloy basket to add rigidity Venturi Effect cooling and vented spider cavity help cool the motor assembly 2" high-temp voice coil with spun-laced Nomex® reinforcement collar Reversible diamond cut cast aluminum trim ring Protective PVC textured magnet cover Tall Profile surround allows for 20% greater linear excursion than standard surrounds Stitched-in tinsel leads lower resistance for improved reliability Custom compression terminals accept up to 10 gauge wire Extended pole piece and bumped backplate Frequency Response: 29-250 Hz