What's your volume level

[baddog]

14' x 23' room. 9 ' ceiling.

Speakers on short wall.

Seated ~ 9 feet from speakers. Speaker efficiency around 87.

I have Devialet 400s.

-36 for pop music, other music depending on format (PCM vs DSD), style and how it is mixed varies.

This would be for slightly above background listening. One would turn it down if conversing with someone in same room.

I would never have it set higher than -10dB which would be really really really loud in the room.

Note my room has openings on one side to other rooms.

So as others said lots of variables. Size of room, distance from speakers, efficiency of speakers, how loud you like to listen, and whether room has openings to other rooms, lots of absorption, etc...