RMS 750 watts Dual 2 or 4 ohm voice coils Optimized for small ported, sealed, & band-pass enclosures Large aluminum Faraday ring for smooth acoustic response High strength cast aluminum frame Low distortion motor construction High-temperature voice coil wire Spring-loaded terminals Stitched-on “XL” tinsel lead wires The SA Classic sub is a stunning combination of value, power handling, and deep excursion. It features a cast aluminum frame that houses a bulletproof custom 2.5-inch voice coil, robust double-layered Nomex spider, and SPL competition-grade paper cone. These components are built into a flexible design that works well in any type of enclosure. Specifications T/S SPECS SA CLASSIC 12" D2 SA CLASSIC 12" D4 RE (Ohms) 4.57 7.07 FS (Hz) 33.71 33.96 VAS (L) 21.21 24.63 Qes 0.58 0.55 Qms 5.34 5.15 Qts 0.52 0.49 Le (mH) 3.40 4.84 BL (NA) 21.64 25.67 Mms (Grams) 280 237 Cms (uM/N) 79.43 92.27 Sens (dB @ 1w/1m) 83.21 84.22 Enclosure Specifications SA CLASSIC 12" Sealed Enclosure 1.0 cu ft Ported Enclosure 1.75 cu ft Recommended Tuning 35Hz Recommended Port Area 26 sq in Displacement 0.14 cu ft Depth 6.5″ Outside Diameter 12.625″ Cut-Out 11.125″ Physical Dimensions Download Enclosure Designs .Zip File