Package: KICKER 43C154 Comp 15" 600 Watt Car Subwoofer With Single Voice Coil + Rockville RSQ15 Single 15" 2.6 cu.ft. Sub Enclosure + 14 Gauge Speaker Wire + Screws + Spade Terminals 15" 500 Watt SVC 4-Ohm Car Audio Subwoofer Sub. Size: 15 inches (38.0 cm), Impedance: 4 ohms SVC. Max Rec Amplifier Power:*, ....500 Watts Peak, ....250 Watts RMS. Sensitivity: 90.3 dB 1w/1m, Frequency Response: 25-500 Hz. Mounting Depth: 7 7/16 inches (18.9 cm) Mounting Cutout: 13 11/16 inches (34.7 cm). Min Sealed Box Vol: 2.25 cu. ft (63.7 L), Max Sealed Box Vol: 5.0 cu. ft (141.6 L). Min Vented Box Vol: 3.0 cu. ft (85 L), Max Vented Box Vol: 4.0 cu. ft (113.3 L) 15" 2.6 cu.ft. Sealed Subwoofer Enclosure Box. Designed for 15" Subwoofers, Machine precision cut mounting holes.  USA Heavy Duty MDF Construction Top of the line Glue for extra durable adhesion. High quality GOLD spring loaded terminals Designed, tested, and engineered to work perfectly with high powered subs. Designed to give the best sound quality