Hey guys after setting up and running YPAO on my Yamaha TSR7850 the scale of volume runs from -80db to +16.5db. I was curious as to what volume level 0db is? Is it 105db as this is the peak that THX says to have or is this considered to be 85 db which is what THX says is to be the continuous volume? The reason I ask is because i've read several different answers to this question online. Your help would be much appreciated! My current understanding is that 0 db reading is equivalent to 105 db but I've heard others state online that this value is actually 85 db. If that is the case 85 db sure is incredibly loud!\n\nThe reason I ask is because I don't want to push my speakers too far (Klipsch RP 8000f's and 504c) but I still wanted to play movies at reference to impress friends and family! I wanted to replicate as close to movie theatre sound as I can and any input would be much appreciated!