4x 18 Sound 21NLW9601 Extended LF Neodymium Transducer 3600W 21" Subwoofer 8-Ohm 2x 18 Sound 21NLW9601 Extended LF Neodymium Transducer 3600 Watts 21" Subwoofer Key Features 96 dB SPL 1W / 1m average sensitivity 135 mm (5.3 in) split winding four layers ISV copper coil 3600 W program power handling Carbon... MSRP: Was: Now: $3,999.00 More Info Add to Cart The item has been added