Did you take in to consideration the fact that the Radio Shack SPL meter is not acurate? There is a page that shows the corrected calibrations for that specific meter. So your room may not be as bad as you thought. I will try to find that info for you if you dont already have it.
Can you correct nulls with acoustic treatments.
I have Magnepan 1.6's. After hearing a musical clarity I really liked in a listening session at someone else's house, I broke down and bought a Rat Shack SPL meter and dowloaded some test files. I wanted to see if it was the acoustics or the type of speakers and system that made the difference.
A brief testing showed a 65 to 80 hz., 5 or 6 db. bump (the drywall bump?) that I had expected. What I didn't expect was 10 to 15 hz. wide nulls (-10,-15,even -20 db.) at several other frequencies.
I tried moving speaker positioning and the frequency of the nulls moved but the pattern was basically the same.
Acoustic treatment to tame + nodes seems intuitive. Can you treat nulls or is this a different problem?
Would really appreciate your thoughts.
Jim S.
A brief testing showed a 65 to 80 hz., 5 or 6 db. bump (the drywall bump?) that I had expected. What I didn't expect was 10 to 15 hz. wide nulls (-10,-15,even -20 db.) at several other frequencies.
I tried moving speaker positioning and the frequency of the nulls moved but the pattern was basically the same.
Acoustic treatment to tame + nodes seems intuitive. Can you treat nulls or is this a different problem?
Would really appreciate your thoughts.
Jim S.