Full Board Set for JBL 4300 Series 4-way Models JBL 4300 Series The auxiliary boards are not

The auxiliary boards are not to be used with the 4340

making them an easy solution for upgrading your existing system

and will snap in to the same press-fit mounting features as the factory crossover PCB

We are happy to be partnering with Solen in Canada to offer a "one stop shop" parts kit for the JBL 4425 Charge-Coupled Crossover Boards

air-core inductors

Full Board Set for JBL 4300 Series 4-way Models JBL 4300 Series The auxiliary boards are notSet of four high quality printed circuit boards that allow owners of the legendary JBL 4300 Series 4 way Studio Monitors (or those who are building their own DIY clones) to upgrade their existing passive crossovers to modern standards using polypropylene film capacitors, air core inductors, and the charge coupling technique used by JBL in their ultra high end studio monitors such as the DD67000. The Full Board Set comes with 2 main boards and 2