I sit 8 ft from the Canton 9k reference stand mounted and SVS subs , my Listening db from 8 ft is in the lower 70ies with max. touching 80 db. If I go louder my ears will bleed. Full length Curtains behind gear, and in front on wall behind sitting position glass enclose large painting 3'x4' ish.Wall to wall carpet vaulted ceiling slopeing low 8 to 16 feet high.