Portable Sound EON 300 : EON 500  : JRX  : MRX500 Series : PRX500 Series : PRX600 Series : SRX700 Series : VRX       SRX728S Dual 18 in. High-Power Subwoofer   Brochure Spec Sheet Manual Hi-Res Image DXF File Tunings Bags and Covers The SRX728S is a high power subwoofer system containing two 2268H neodymium magnet, patented* Differential Drive®, 18" woofers in a front-loaded, vented enclosure. Features :   Specifications : Dual 18 in, 2268H Differential Drive® woofers for extended low frequency output. Large vent area for reduced distortion.   Power Rating   :   1600 W / 3200 W / 6400 W Frequency Range   :   27 Hz - 220 Hz (-10 dB) Dimensions (H x W x D)   :   610 mm x 1067 mm x 838 mm (24 in x 42 in x 33 in) Frequency Response   :   33 Hz - 220 kHz (±3 dB) Net Weight   :   76 kg (166.5 lb.)