Try setting the Denon's speakers to "large" and leaving the sub on - the 2200's bass management may be messing with you. Then set the 1070's switch to "HPF/LPF". At that point, you might try a test disc (even something as simple as my DTD could work, although tones from a disc like AVIA or Digital Video Essentials would be even better since they'd offer a subwoofer channel as well as the full range channels).