Mahesh, if I'm not mistaken, the volume should almost always be set at 0 dB with your Yamaha because doesn't YPAO also adjust for volume (not just room acoustics) so that 0 dB is peaks of 95 dB with DD and dts content? I wouldn't know (this is just gut intuition), but this is an assumption as I have the "old" Yamaha RX-Z1.