1000 Watt RMS/ 2000 Watt Peak 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. Enclosure Designs .Zip File