Rodney, long time no see; welcome back! Five years ago you were starting to tell us about you and your daughter listening to those classical CDs, then nothing further on that.
Excellent receiver you got. The impedance setting should be left at the default higher setting regardless of what the rated impedances of the speakers are. The lower setting reduces the voltage, current and power capacity to help prevent receiver overheating, but this therefore cuts the maximum power available by roughly half and should never be used.
I use an 80Hz crossover with my M22s, which is the most commonly suggested number to relieve the speakers and receiver of some of the lowest bass burden and put it on the sub which is designed to handle it better.
Set the "crossover"(actually not a crossover, just a low-pass filter)on the Hsu to "out", which bypasses that internal filter and allows the receiver to handle the bass management frequencies without interference. Since it's bypassed, the setting on the 30-90Hz control is irrelevant.
Edit: if as you and Randy indicate there's no impedance setting at all, that's fine, since it's useless at best. There's no need to try to adjust for different impedances.
Last edited by JohnK; 12/28/12 02:56 AM.
