Fixing room resonance or reverb?

V4NT0M

V4NT0M

V4NT0M

Soldato
Joined
18 Jan 2007
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Land of the Scots
Hey guys, I recently got some new speakers for my office desk and I noticed they were booming at certain frequencies. After bit of messing around it seems that it is 140Hz that is causing the problem.

I took the speakers to another room and noticed no booming, after which I placed the speaker somewhere else in the office and also heard no booming at 140Hz sat in front of it. However, leaving the speaker elsewhere and moving around the room it seems that 140Hz is most prominent and boomy exactly where I normally sit at my desk.

So it seems I'm sitting at exactly the worst place for this frequency. I guess it is the size/shape of the room and possibly even the desk playing a part.

Now my question is, can I solve this issue with acoustic panels and how do I know where to place them. Do you think placing some behind the speakers and/or desk will help?
 
My room requires room treatment, so your not alone.

I would recommend using some isolation foam under the speaker. This is the most easy to do and something everyone should do anyway, and it might just stop the issue.
 
Foam isn’t great at absorbing sub 200 Hz unless it’s very dense and placed correctly.

However, most will look at the thin stuff on Amazon/eBay/wherever and think it’ll be a fundamental difference.

I want to set your expectations here and make you aware that it won’t be the case.


Thin foam is good at taking “sting” out of the room, but if you’ve got resonance at lower frequencies, it’ll do next to nothing.


You’ll either want to EQ it out, using REW, or use proper acoustic treatment.


Make sure you’ve isolated the speakers from a desk though, as thin/somewhat hollow desks can cause a speaker to sound boomy. And make sure it’s away from a wall, as many monitors/speakers are rear ported.
 
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