By JBL fanatics. For JBL fanatics.

We've heard the difference that a modernized crossover can make in our own vintage JBL systems, and we want to make it as easy as possible for DIYers to breathe new life into their own speakers.

  • Minimal hassle.

    Save yourself the hassle of plywood, hot glue, and point-to-point wiring. Our high-quality PCBs, detailed instruction manuals, and parts list make it easy to upgrade your speakers.

  • Fully compatible with factory crossovers.

    Following our provided parts lists yields an updated crossover with voltage drives equivalent to the factory crossovers.