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Room Acoustics Forum by Rives Audio Welcome! Need support, you got it. Or share you ideas and experiences. |
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Room Acoustics Forum by Rives Audio Welcome! Need support, you got it. Or share you ideas and experiences. |
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In Reply to: Help with panel placements posted by drob on February 3, 2006 at 06:27:42:
> The frequency response of my speakers is 44Hz~21kHz so I wasn't planning on adding bass traps. Is this wrong? <Yes it is wrong. All rooms need bass traps to flatten the response and reduce low frequency ringing. Without bass traps the flattest speakers in the world will still vary by 30 dB or even more below 300 Hz. Below is a graph showing a low frequency response that is absolutely typical for all rooms. Note the peak/dip pair at 110 and 122 Hz where the response varies a staggering 32 dB across a range smaller than one musical whole step.
> I did however plan to build 6 2'x4' 2" fibreglass panels to use as sound absorbers. Should these all be placed in front of the speakers, or should some be placed on the side walls behind the speakers as well? <
The "ping" you hear is caused by echoes bouncing repeatedly between large areas of bare parallel wall. So the goal is to treat the walls, but not completely. I favor a stripes pattern or checkerboard. Even covering 20 percent of the bare surface will make a very big improvement.
--Ethan
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Follow Ups
- Re: Help with panel placements - Ethan Winer 10:21:56 02/03/06 (5)
- Re: Help with panel placements - Inmate51 07:57:38 02/05/06 (2)
- Re: Help with panel placements - drob 16:49:59 02/05/06 (1)
- Wall treatments - Inmate51 08:26:39 02/06/06 (0)
- Re: Help with panel placements - drob 10:56:24 02/03/06 (1)
- Re: Help with panel placements - Ethan Winer 09:07:46 02/04/06 (0)
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