Free Shipping! RCF SUB 8008-AS Professional 4400W Powered Dual 18" Subwoofer For Live and Club Applications, Dual 18" Woofers with 4" Voice Coil, 4400W Class-D Amplifier, 137 dB Max SPL, 30 to 120 Hz Frequency Response, Two XLR Inputs and Two Thru...