Amazon.com: JBL Professional SRX818SP Portable Self-Powered Subwoofer System, 18-Inch, Black : Everything Else
JBL SRX818SP 18" + JBL SRX 835P Top Speaker Package Band or DJ | Reverb
Performance Audio - Performance Audio currently has a full JBL SRX800 Series system for sale at blowout pricing. $5k for two JBL SRX815P main speakers, two JBL SRX818SP subwoofers, speaker covers, sub
JBL SRX818SP 18" 1000 Watt Powered Subwoofer Active Sub PROAUDIOSTAR | Reverb