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Author Topic: Is there a way to check a bass trap?  (Read 10907 times)

Offline Bogic Petrovic

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Re: Is there a way to check a bass trap?
« Reply #15 on: September 29, 2010, 03:25:35 pm »
This may be good idea, because electric impedance of boxed loudspeaker
is indeed very sensitive to near obstacles (acoustic impedances),
and measurement of electric impedances is much easier and precise.

BTW, reasonable and standard method, using room RT60 measurement, is described in
"Multichannel surround sound systems and operations", AES TECHNICAL COUNCIL
Similar paper with slightly relaxed limits is
Subjective assessment of audio quality - the means and methods within the EBU

Although this papers are about surround sound, there aren’t many reasons why it can't be usable for stereo.
Even if we don't know directly about bass trap efficiency (acoustical impedance or absorption coefficient),
with RT60 measurement we can get (some) info about overall room acoustic behavior (reason why we use bass traps).

Offline compasspnt

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Re: Is there a way to check a bass trap?
« Reply #16 on: September 30, 2010, 10:50:54 am »
Is there a way to check a bass trap?

Hmmm, I had assumed just open it up, peek in, and see if you had trapped any basses inside.

But be careful...before you stick your hand in, use a flashlight to see if there are any eyes shining back.

They can be vicious like mongeese.

Offline Blas

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Re: Is there a way to check a bass trap?
« Reply #17 on: September 30, 2010, 05:09:04 pm »
Terry, Have they left you out on the beach in the bright sun too long again?  'Cos the right answer (to myself) is just see if it was sprung!

Someone, drag him back in the studio.  Very Happy

Joe
Conjecture and theory are all well and good...but the proof comes out of the speakers - Fletcher
He who has said the pen is mightier than the sword, has never been in a pen & sword fight!- me

Offline Tidewater

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Re: Is there a way to check a bass trap?
« Reply #18 on: November 10, 2010, 11:45:18 pm »
Beat me to everything.

Mongooses?
Time Magazine's 2007 Man of the Year

Offline franman

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Re: Is there a way to check a bass trap?
« Reply #19 on: February 04, 2011, 08:13:58 pm »
finally some "useful" information... whats up with all the math?? Making me dizzy...

fm Rolling Eyes
Francis Manzella - President, FM Design Ltd.
                 - Managing Director, Griffin Audio
fmdesign.com
griffinaudiousa.com