My poor brain is melting trying to figure out if more speakers means more clarity when watching movies, which in turn means not having to turn the power up as much!
I worry a bit because depending on the audio source I have to turn the receiver up to -25db (Sky is usually the culprit). I know it probably doesn’t matter, but I’ve had experiences in the past where I’ve knocked out amps due to being overzealous with the volume!
As Cougar said, if you’re watching the TV through your AV amp in anything other than a stereo mode (on your AV amp) then it’s going to sound very odd.
-25db sounds a lot but it’s probably just low output volume, same from my Panasonic TV via optical, often get a shock when we flip it on to spotify/NAS or something
Edit: Just get a sub, pretty cheap s/h and they’re great imo.