Sundown Audio SD-Series v.4 8" Neo Subwoofer

RMS 400 watts Dual 2 or 4 ohm voice coils Optimized for small, sealed enclosures Lightweight Neodymium motor Computer-optimized foam “w” surround Two-inch 8-layer copper voice coil Large aluminum Faraday ring for smooth acoustic response Patented high strength cast aluminum frame Low distortion motor construction High-temperature voice coil wire Spring-loaded terminals Stitched-on tinsel lead wires The SD-4 series truly is a world-class sound quality woofer with low mounting depth, small box requirements, yet extraordinarily high power handling. It's the ideal choice for anyone seeking a high-quality, low-mounting-depth subwoofer that performs hammers in small enclosures. With enhanced mechanical durability and superb sound quality, you get the perfect marriage of form and function. Specifications T/S SPECS SD-4 8″ D2 SD-4 8″ D4 RE (Ohms) 4.2018 6.4276 FS (Hz) 35.6841 36.2549 VAS (L) 12.1640 12.8320 Qes 0.5783 0.6561 Qms 5.7988 5.7301 Qts 0.5259 0.5887 Le (