JBL GTX-500 Mono Subwoofer Amplifier — 500 watts RMS x 1 at 2 ohms - Creative Audio
JBL – 518S500 Watt powered subwoofer
Saxo- JBL subwoofer 500 Watt-magnat the rock 1000 :P - YouTube
JBL PRX518S 18 Inch Powered 500 Watt Subwoofer | PSSL ProSound and Stage Lighting
OG Official™ on Instagram: “Two 10 inch JBL subwoofers, 500 watts each, 1000w amp, and setup wires never been opened. 450$ obo. They're in … | Subwoofer, Jbl, Setup