This is a PartsExpress model that filters at 600HZ and is rated at 4ohms. I used this with a separate low pass filter which is unrated. Both drivers (Altec 802 and Altec 416 - 15") are rated at 8ohms.
Without any attenuation circuit, the HF driver overpowered the woofer. Since I installed the attenuation circuit, I have turned the HF down on the attenuator all the way, and now the system sounds much more balanced.
I don't recall crossover circuits (filters) being rated in ohms before now. Was the 4ohm rated high pass filter responsible for an overpowering HF driver?