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 SR_SF / SR-4719 x grille boven Luidsprekerhoes Baseline | Tailor-made loudspeaker covers
SRseriesII Brochure
JBL SR Series II SR4719A Dual 18" Speaker Subwoofer 2241H | #1803101564