The crossover modules arrived from KMTech. The Yammies cross at 500 and 6000 Hz, these boards cross at 501 and 6090 Hz which is the closest match using standard resistor/cap values. I'm not using the stock PCB mounted RCA sockets, so I've added extension wires to the boards made from wires I stripped out of some Klotz MC-5000. The input cables are made from the same, but I just stripped off the outer jacket and copper shield on these. As I will probably be using interconnects made from Klotz MC-5000 it made sense to use this on the internal connections.