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Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag

Overview
Acousta-Stuf is a synthetic material made from crimped fibers. It is an excellent choice for filling small enclosures or transmission line cabinets. Acousta-Stuf will also outperform Dacron, foam, and fiberglass. Acousta-Stuf is a sound absorption, dampening fiber that will deepen bass and more!
Part # 
260-317
Weight: 1 lbs.  
IN STOCK
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$10.80
Buy 10-up$9.35
Part # 260-317
Qty:  EA
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Product Details

Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag

Acousta-Stuf is a synthetic material made from crimped fibers. It is an excellent choice for filling or stuffing small enclosures or transmission line cabinets. Long fiber wool has been a favorite among serious speaker builders but Acousta-stuf is less expensive than long fiber wool and does not have the problem of harboring moths. Acousta-Stuf™ will also outperform Dacron, foam, and fiberglass.

Acousta-Stuf is a sound absorption, dampening fiber that will deepen bass, provide cleaner midrange and improve the dynamic extension of any speaker system. There are no health hazards with Acousta-Stuf and no mask or gloves are needed when using this product; the melting point is a very high 490°F. Most sealed and vented enclosures require 1/2 lb. of dampening material per cubic foot of enclosure. For best results it is recommended to loosely fill the material throughout the enclosure.



Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag
  • BrandParts Express
  • Part Number260-317
  • UPC844632037382
  • Product CategoryCabinet Damping Material
  • Unit of MeasureEA
  • Product Rating
    (63 Reviews)
  • Weight1 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag
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Reviews

Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag
Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag is rated 4.4444 out of 5 by 63.
Rated 4 out of 5 by from Nice productI am pleased with this product, the only thing is that I have to buy like 4 more pounds for my application.
Date published: 2014-10-06
Rated 5 out of 5 by from Fantastic ProductI purchased PE Acousta-Stuf Polyfil, #260-317, 1 lb., to tame the bass in the Dayton 652 PE speakers. I added 2 oz. recommended by reviewers. Incredible. It tamed the boom of the base to a cleaner tone. I have a bout 12 oz. remaining, that will be used in the speaker cabs I am prepping to build. I have used quilt or pillow batting before, however, the Acousta Stuf is the real deal. It is a little more dense than batting and really dampens cabinet resonance very well. Thanks PE. Your products keep me coming back.
Date published: 2014-10-05
Rated 4 out of 5 by from Does what its supposed toUsed this in a small ported subwoofer build. It definitely cleaned up the sound a bit, but don't expect a huge difference. Still would recommend it over nothing.
Date published: 2014-08-14
Rated 5 out of 5 by from works as expectedAcousta Stuf does a good job on damping. However, the shipping is more expensive than the product.
Date published: 2014-07-29
Rated 5 out of 5 by from Acousta-Stuf PolyfillProduct needs to be fluffed, 1lbs was about 1/2 a pound too much for my two tower speakers. Works well, and the sound is much better!
Date published: 2014-06-25
Rated 4 out of 5 by from Really Helps!I'm happy I bought Acousta-Stuf for my speakers really helped on sound. Just don't over stuff the speakers.
Date published: 2014-06-20

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag

I am trying to design a transmission line enclosure. How much is the speed of sound slowed by this filling.  Does the percentage change with frequencies.

Asked by: headinury
The speed of sound is not slowed, rather the stuffing absorbs the back wave. This is frequency dependent, and the longer the wave (lower the frequency) the more material is required. Generally TL's are stuffed from the rear of the driver to the terminus, the amount or density of this stuffing is determined by the end user.
Answered by: MattP
Date published: 2014-12-11

If I have a sealed cabinet that is .53ft^3 how much of this should I use?

Asked by: thatnoob
We recommend starting with a half pound per cubic foot of volume, this means you should start with about 1/4 of the bag. You can then add or remove stuffing to get the sound you want.
Answered by: MattP
Date published: 2014-03-17

Hello How much Acousta stuff polyfill material do i need to fill two chambers of 2,5 cf volume each?

Asked by: Jonvold
There is no right or wrong answer for this. We usually recommend about a half pound per cubic foot of airspace but you can adjust to suit to personal taste.
Answered by: MattP
Date published: 2014-01-20

what kind of cabinet is this for?

I'm building a pair of ported bookshelf speakers, is this suitable for dampening them (each cabinet is roughtly 2 ft^3)? how does this compare to regular acoustic foam?Thanks
Asked by: ben199
I generally recommend stuffing a sealed cabinet and lining a ported cabinet. Both products work to achieve the same result but in two different ways. I usually use standard fiberglass insulation or Sonic Barrier sheets for ported cabs.
Answered by: MattP
Date published: 2014-12-11

When using Polyfill, is the volume of material or the weight (density) of the

material more important? If you use 1lb per cuft and the fill settles, do you need additional fill? Which dampens more - the volume or the mass.
Asked by: WaxLips
It doesn't settle. Most of the time it is sticking out of the box and you have to mush it in to fit the driver. I weigh it out on a digital scale in a plastic salad bowl. I take little clumps and pull and pull to get a uniform density. The pile ends up being huge and if you mush it then it will pop right back. I suppose you could say the weight is a suggestion. One pound will give you a certain volume no matter how much you fluff it out. My old boss used to stuff it in pantyhose, tie off the leg, and throw it in. Personally, I like to stretch it for all it's worth and lay out many thin uniform layers to cover all internal spots of the box.
Answered by: musiCal
Date published: 2013-07-06

What's to keep the fluf out of the back of the speaker?

Asked by: Masterbrk
Nothing. The whole bag of this stuff is pretty much one big clump. You have to rip off chunks and pull and pull to strech it out to a uniform layer. It's not like little hairs will be flying around. Most sealed boxes that I've weighed it out for end up being pretty full. The sub kind of pushes it down in the box. I've never noticed it inside the frame of the sub when taking it out. My old boss used to put it in nylons and tie it off then throw it in the box.
Answered by: musiCal
Date published: 2013-04-25

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