15" Punch Stage 2 2" excursion 2" voice coil 78 oz double stacked motor structure Molded polypropylene woofer cone with poly-foam surround ABS/acrylic parabolic dust cap "Venturi-effect" design for maximum cooling of motor structure Top-mount depth: 7-1/8" Sealed box volume: 0.7-1.8 cubic feet Ported box volume: 1.79 cubic feet Custom 10-AWG nickel plated push terminals Extended pole piece and bumped backplate High-temp voice coil with spun-laced Nomex® re-inforcement collar Linear spider with embedded 16 AWG tinsel leads Parabolic injection molded ABS/Acrylic dustcap Protective PVC textured magnet cover Reversable ABS trim ring Sturdy 16 gauge compound-bend frame Thermoformed polypropylene cone Priced per speaker