Old school 15" JBL GT box Build | Car Audio Forum
JBL GT1200 SUBWOOFER TECHNICAL DATA | ManualsLib
2x JBL Gt152 (38cm) Made in USA Subwoofer in Hessen - Kassel | Lautsprecher & Kopfhörer gebraucht kaufen | eBay Kleinanzeigen
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