JBL 4311 Upgrade Kit (Pair) $730.00 JBL LSR 6332 Upgrade Kit (Pair) $759.00 – $945.00Price range: $759.00 through $945.00 JBL 4401 Upgrade Kit $259.00 – $380.95Price range: $259.00 through $380.95 JBL L-112 Upgrade Kit $679.00 – $864.00Price range: $679.00 through $864.00
