The JBL VLA-C125S-ACC is an accessory kit developed to configure three VLA-C125S subwoofers into a cardioid low-frequency array. Rather than functioning as a standalone audio component, the kit provides the dedicated connection hardware needed to organize the subwoofers into a two-forward, one-rear arrangement. This configuration is intended to help control rearward low-frequency radiation in professional sound reinforcement installations.

The kit is specifically designed around the connection requirements of the VLA-C125S enclosure. Its arrangement permits inter-cabinet wiring to be routed through the top and bottom connection points, keeping cables concealed between cabinets instead of leaving exposed connections around the array. This results in a cleaner installation while simplifying the electrical interconnection of the three-subwoofer configuration.

Each kit includes the components required for the cardioid wiring arrangement, including gland nuts, gland nut covers, jumper cables, and protective covers in both black and gray. The supplied components are intended to work with either available cabinet color, allowing the accessory setup to remain visually consistent with the selected VLA-C125S enclosures.

For professional permanent-install applications, the VLA-C125S-ACC provides a dedicated approach to implementing cardioid subwoofer wiring without requiring improvised external cable routing. Its purpose-built design complements the VLA Compact platform and is particularly useful when multiple VLA-C125S units need to be arranged as a controlled low-frequency system.