I have a Yamaha 595a receiver and a Panasonic RP91 DVD-Audio player. I hooked up the 5.1 to the receiver to receive the surround sound from the first DVD audio title (Shania UP) and was suprised to hear little to no bass from my properly calibrated system (video essentials). Is there something amiss? I turned up the bass settings from the player +6 dB, but this did not help much. I can get better bass by simply turning up the sub, but this throws off my Dolby Digital calibration. Anyone have any ideas?