Check the listing for details. Single Crossover PCB for the Volt-12 Coaxial DIY Speaker Design - PCB Board Kit. Condition: New. Listed at 12.50 USD. Custom printed circuit board designed for the crossover of the Volt-12 Coaxial DIY speaker design. Take the guesswork out of crossover assembly, these boards make the assembly process quick and straightforward. These boards measure 5.0" x 4.6" and feature large solder pads and wide copper traces for great electrical connectivity. Includes: 1x Crossover PCB for the Volt-12 speaker design. 3x Terminal blocks which accept up to 12 gauge wire. 4x Snap in PCB standoffs. 4x Mounting screws (screw finish may vary). Requires: Crossover components for the Volt-12 speaker design. Assembly: Glue components to the correct positions on the board (hot melt glue works great). Secure inductors with non metallic cable ties. Solder components leads to the pads on the bottom of the board. Attach wires from input and drivers and mount crossover board.