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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.

stilljd

Showing 1 response by samujohn

samujohn's avatar
samujohn
291 posts
 
Hi Jim,
Welcome to the wonderful world of measurements. Its seems to me that you have two basic choices.
1. Move your speakers and listening position about until you get the best subjective results and then stop. Trust me, few do better.
2. Get serious about measuring and the post your results so others can coach you through the process of taking measurements and interpreting them. Expect a serious learning curve. You may eventually opt for room correction, but you should be properly informed before spending. New speakers may be far cheaper - or may do nothing to correct the problem. I went for a Tact unit and a sub with my dipoles. I am happy with the results, but it took a while.
regards,
Sam
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