Actual db levels for sub when setting up HT
I've been futzing around with Radio Shack spl meter and the correction factor table provided by a member of this site. When I set the level of the sub so that it is playing at the same level as the mains, the sub is waaaaaaaaaaay too loud. Is there a rule of thumb about how flat and how low the sub should play?
Here is what I get for readings using 70db for reference @1khz. All correction factors have already been applied.
20hz= didn't try as it is below the tuning frequency of the port and I've heard bad things can happen
25hz=69.4db
31hz=68db
40hz=68db
50hz=73.3db (room issue)
63hz=66.8db (room issue)
80hz=70.5db
Sub is crossed at 40hz and provides the most seamles transition from mains at this setting. When I back it off about 7-10db it sounds much more normal for HT movie use. I don't use the sub for music.