Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
The big silver block that comes with the crossover is R3. It is not optional - It must be connected to the crossover board at the R3 connector. Mount it with screws to the inside bottom of the cabinet, right beside the crossover.
Also, make two gaskets from cardboard or sheet PVC. One should be the same size as the crossover and the other is the same size as R3. Use the gaskets underneath the crossover parts when mounting them.