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Suggestions for 'filling the port' of bass reflex

I've been demo'ing a pair of full range/single driver speakers for a few weeks and have now gone back to my floorstanders that have a port for the mid-bass and bass drivers...well, it's a little overwhelming now and I'd like to tone it down a little.

Suggestions for what to use....besides a sock?

Thanks, L'wood
lwood
williamredburry
51 posts
 
Try an Acoustic System pro resonator ( copper) for internal use. It brings a lot of good things !!!!!!!!!
rodman99999
6,128 posts
 
The bonded dacron that I suggested will turn some of the acoustic energy in the port to thermal energy, and thereby damp it's resonance. Done correctly(not crushed or tightly packed), it won't impede the woofer's motion. It certainly will not damage the system in any way.
jdoris
972 posts
 
George Short and North Creek appears to favor the approach suggested by Samujohn: he shipped straws with the Eska kit I purchased (rear ported). I've not compared the straws with other materials, tho. John
roxy54's avatar
roxy54
7,974 posts
 
I tried the straws before I tried the upholstery foam, because Stuart Tyler of ProAc used straws in the Response 1 speaker years ago. It did not sound right at all in the ported Dahlquist speakers that I was using. Foam did the trick.
shadorne's avatar
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shadorne
7,477 posts
 
FWIW - are you aware of what you are doing when plugging the port? Depending on the tuning, the port may be beneficial in that it protects the woofer from extreme excursion at ultra LF.

Not all ports are tuned to boost bass although in consumer speakers most are.
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