JBL SR 4719 X - JBL SR 4719 X, 2 x 18" Subwoofwer, 1200 W 136dbmax SPL,
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 SR4719X Passive 1200W Dual Subwoofer Speaker 2×18" Sub SR-X Series - SALES BARON