I just bought the STR-DH590 and hooked up my Bose Acoustimass 7 (running thru the Bose subwoofer that is attached to the speakers). The front Bose speakers are fine as well as the surrounds and center. However, the Bose sub doesn't seem to be outputting any sound. Also, the powered subwoofer hooked up thru the subwoofer RCA cable is not outputting any sound either. Any help appreciated.