2. misc-audio
  3. 1174178776

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 3 responses by acoustat6

acoustat6
357 posts
 
Thats the whole idea. Well part of it anyway. To reduce standing waves (peaks and nulls), along with modal ringing, which is just as important. To absorb or diffuse sound in the room to avoid ringing and flutter echoes, and improve stereo imaging. This is some of the things that acoustic treatment helps with and which EQ cannot. Now about those acoustic resonators....
Bob
acoustat6
357 posts
 
"New speakers may be far cheaper - or may do nothing to correct the problem".

How would changing speakers change the room acoustics?
bob
acoustat6
357 posts
 

"If you're ambitious, you can try DIY panel traps. There isn't much in the way of designs and plans available on the net but you'll get the vague idea with research."

All you ever wanted to know about bass trapping and acoustics is available at Ethan Weiners site Real Traps. Designs for bass traps or buy his product. The best money you will spend in audio and a real ear opener. Dont wait, we all should have done this from the very beginning. Why didnt anyone tell me this years ago? I dont know how anyone can be serious witout them, you will finally hear your equipment for what it is.
Bob
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