JBL speaker kits are the sets of parts used for repairing vintage or damaged JBL brand speaker systems, including vintage JBL car speaker components. These kits are commonly referred to as refoaming, reconing or restoration kits.
JBL is an American audio electronics firm that was founded in 1946. It is common for vintage JBL speakers to have seen decades of heavy use, causing parts to wear out or break. The suspension foam pads on speakers gradually disintegrate, resulting in degraded sound. As of 2015, most speaker kits sold online are repair kits that include parts such as replacement foam surrounds for the speakers.