JBL SRX928S Dual 18″ Active 1100w 140dB Chest Thumping Sub-Woofer
SRX928S JBL. Dual 18" 1100w Active Sub-Woofer. System Type: Active Subwoofer. Dual Ethernet ports with Neutrik etherCON connectors. Go ahead, push your 928S to the edge. Frequency Range (-10dB): 31 Hz-100 Hz (Preset: 80 Hz).