JBL Stage3 9637 3-Way Car Speaker Set by Harman Kardon - 375 Watt Car Audio System with Large JBL Oval Woofer 6" x 9" (152 mm x 230 mm) : Amazon.co.uk: Electronics & Photo
Old school 15" JBL GT box Build | Car Audio Forum
Subwoofer JBL GT 152 serie 300 w/ Denon (Bass I Love You) - YouTube