The Memphis Audio PRX624 is a 6.5" subwoofer from the Power Reference series, engineered for reliable bass performance in a compact size. It features FLEX Selectable Impedance Technology, allowing configuration at 2Ω or 4Ω for flexible system design. DVVC Direct Voice Coil Cooling technology enhances heat dissipation, supporting consistent performance under load. A black polypropylene cone with double-stitched butyl rubber surround provides strength and controlled excursion. Reinforced spider shoulder and improved suspension and coil design contribute to durability and bass accuracy. The PRX624 also uses woven tinsel leads, a high-temperature TIL voice coil former, and a stamped steel frame for added reliability. Features • FLEX Selectable Impedance Technology (2Ω or 4Ω) • DVVC Direct Voice Coil Cooling • Black polypropylene cone • Double-stitched butyl rubber surround • Reinforced spider shoulder • Improved suspension and coil design • Woven tinsel leads • High-temperature TIL voice coil former • Stamped steel frame Specifications • Model: PRX624 • Size: 6.5" (165 mm) • RMS Power: 150W • Peak Power: 300W • Selectable Voice Coil: 2Ω or 4Ω • Sensitivity: 82 dB @ 2Ω / 82 dB @ 4Ω • Magnet Size: 41 oz • Mounting Depth: 3" (76 mm) • Cutout Diameter: 5.67" (144 mm) • Voice Coil Diameter: 1.5" (38 mm)