Glenn, yes maybe you are over-thinking this a bit. Sure, connect the Denon front channel pre-outs to the Carver to power the M22s, and the Denon front channel speaker terminals to the EP175 speaker level inputs. The low-pass filter on the sub would be adjusted to get a good blend with the "natural" roll-off of the M22s.

-----------------------------------

Enjoy the music, not the equipment.