2) JBL, Professional Series, SR4719A, Dual 18" Subs / Sub Woofers in Speaker Cabinets | #272 SMARTBoard Electronic Whiteboards, Projectors, Screens, Home Theater Audio/Video and Night Club Item Liquidation | K-BID
JBL SR4719A Question - Craig Vecchione's Live Sound & Production - Harmony Central
JBL Professional SR 4719A Subwoofer/Bass System Black/Grey | Reverb
Transport a JBL SR 4719a dual 18" sub / 1 pair to Alice | uShip
JBL SR4719A PAIR of DUAL 18" subwoofers | Reverb
JBL Dubble 18 SR 4719a - musical instruments - by owner - sale - craigslist