12” ALPHA 600 SERIES SUBWOOFERReplaces PSW612 model 1400w 700rms Proprietary Cast Alumium Alloy Machie Cut "Alpha" BasketProprietary Coolig Rigs for Motor Assembly (Patet Pedig)Kevlar Reiforced Composite Balaced u0026 Lamiated CoeHigh Tesile Stregth Two-Layer "J" Surroud for Ehaced CotrolFlat Progressive Rate Nomex® Damper w/ Spiral-Wove LeadsDual Cotact Termials for Wirig Ease75 oz. Double Stack MagetRated at 700 Watts RMSEfficiecy: 88dBFrequecy Respose: 30 - 500 HzDual 4 ohm 2-1/2” Voice Coils8-Gauge Lug-Lock Iput Termials