How to siff out 140 Hz Resonance

sbnx

New Member
Mar 28, 2017
27
0
0
#1
All, during room measurements you can see a nasty ~140 Hz resonance. Is there a good tool to use for this? I have walked around the room and can't really hear it as it emerges from the background 10 dB down. I have tried holding several things in the room with my hands with no effect. I was thinking maybe using pink noise filtered from 80Hz to 160Hz and walking around with the mic with the RTA in XTZ.

Anybody have any other thoughs or ideas for stuff that has worked for you?

Thanks.
 

Kal Rubinson

Active Member
May 5, 2010
1,437
0
36
NYC/CT
www.stereophile.com
#2
All, during room measurements you can see a nasty ~140 Hz resonance. Is there a good tool to use for this? I have walked around the room and can't really hear it as it emerges from the background 10 dB down. I have tried holding several things in the room with my hands with no effect. I was thinking maybe using pink noise filtered from 80Hz to 160Hz and walking around with the mic with the RTA in XTZ.

Anybody have any other thoughs or ideas for stuff that has worked for you?

Thanks.
I would use a broader or no filter and average over, say, 4-5 sweeps. Then, as you move slowly around the room, you will see where you get a rising peak at 140Hz.
 

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