Hi Steve,

If you unplug the speaker wire and put a 9 volt battery wired + to + and - to - on the speaker input the woofers should move out. This test will eliminate the speaker being internally wired ok. The next step would be to follow the + speaker wire back to the Denon and be sure it is plugged into + output on the Denon. What sort of markings are on your speaker wire to designate + from -? In one instance when I was trouble shooting phase the printed designation on the speaker wire flipped sides on its way back to the amp. It is not unusual for the phase test from the receiver to be wrong; you can't beat the battery test and a good physical check of the wiring.

Ian Colquhoun
President & Chief Engineer