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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
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Part # 260-317
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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
    (57 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
in the Cabinet Damping Material product category.

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 4.4386 out of 5 by 57.
Rated 5 out of 5 by from Good stuff.This stuff does what it is supposed to do.BUT if you buy this by itself, the shipping charge costs more than the product itself.
Date published: 2014-04-01
Rated 5 out of 5 by from Works as advertised!I put this in a pair of sealed enclosure Dahlquist DQ10s I rebuilt and was very happy with the results, firm tight bass. I had a pretty good amount left over from the 5lbs. I bought so I put it my ported Reynaud Offrandes. I'm still evaluating them, but the bass tightened up and smoothed out, less boom. It certainly changed the voicing of the speaker. Not sure if I will leave it in but it definitely does what is is advertised to do.
Date published: 2013-04-12
Rated 5 out of 5 by from Low toneGreat used it to give my bass amp a deeper low tone. My Line 6 bass amp had no filling or damping of any kind, now it has a lower more solid sounding tone
Date published: 2013-03-22
Rated 5 out of 5 by from This stuffing stuff is some good stuff.I used this in a 8" sub. I only used about 1/3 of it. It is a litte clumpy straight out of the bag. Fixed easily. Works well and showed up quicker than expected. All in all a good deal to me.
Date published: 2013-02-19
Rated 5 out of 5 by from Works great!Says what it does, does what it says! (And no itching!)
Date published: 2012-09-04
Rated 5 out of 5 by from AR-3a RestorationAfter opening my 40 year-old AR-3as, I found them filled with glass wool. Any kind of handling generated tiny airborne shards of glass fiber which irritate the eyes and breathing. I had to use goggles, a mask and nitrile gloves. I decided then to try the Acousta-Stuf polyfill to replace the glass. It was a good choice and the results are very satisfactory.It is important to "fluff" this material properly to get the density desired. Using 1/2lb per cubic foot, three pounds just filled my AR-3as perfectly. The sound is as good as the glass, possibly better. It will take long listening to decide. It is certainly safer than the glass.
Date published: 2012-12-27

Product Q&A

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

Does acousta-stuf increase the Vas?

I am creating a portable dock and i would like to cut back on the massive size required by the manufacturer. Is using acousta-stuf a way around using the full required Vas? I am using 3 inch tang band full range speakers and they each require .05 cu. ft. which seems to be quite a lot. And if i do use the acousta-stuf can I port the enclosure? Will the acousta-stuff damped the bass output?
Asked by: BeetzyBoy
Dampening material is not a band aid for making a box too small. It will lower the resonance in the box making it sound quieter than a box with no dampening. That's good so you can hear the music and not the speaker. Once the speaker starts making it's own noises then it can't handle any more power. I usually use poly fill for sealed and cascade foam for vented. My old boss used to put poly fill in panythose and weigh it on the scale. For vented boxes he would leave it in the pantyhose, tie it off, and throw it in. That way it couldn't come out of the ports. We had generic boxes and if a certain sub didn't work or sound good in it he would just keep adding poly fill untill it muffled the peaks out. I never really agreed with that method but it wasn't up to me. .05 ft3 isn't even 4.5" cubed internal dimensions. That doesn't seem too unreasonable for a 3" driver. Vented will be bigger if that was the volume for sealed. If you use thinner material it wouldn't be so bulky. The tube of a 6" port cut 3" long would be around .05 then wrap in cloth and resin maybe. Vas is about cone size and how far it moves. Dampening deals with the sounds the cone makes when it moves. The size of the box being right is more important than making it small and over dampening.
Answered by: musiCal
Date published: 2013-06-15

how man cubic inches/feet per 1lb bag, please?

Asked by: hapiniregon
That depends on how much you tease it apart, the concept of volume doesn't really apply. Speakers typically specify damping by weight. One of the kit speakers I had came with four bags of the stuff, each measured out by weight for different compartments.
Answered by: AlonzoTG
Date published: 2013-01-25

What is the best way to fluff Acousta-Stuf?

Asked by: Moose68Bash
Acousta Stuf comes in a bag and is pretty compacted together. All you have to do is pull apart the fibers as well as you can. Think about how you fluff a pillow.
Answered by: MattP
Date published: 2013-04-17

i have a speaker box

that is 2't x 13.5"w X 15"d and its all sealed its got 2-SELENIUM 6.5" and a SELENIUM -ST 200 supper tweeter in it. should i use this to bring the sound down? if so how many bags?
Asked by: big white
A good rule of thumb is about a half pound of stuffing per cubic foot of volume in the elcosure. Assuming those are external dimensions, you have around 2.5 cubic feet of total airspace.
Answered by: MattP
Date published: 2013-02-22

What is the denier, fiber type and cross-sectional shape of the fibers?

Asked by: Beacon of knowledge
The cross-sectional area and shape of this is known as 'trifilar', or most like the Mitsubishi logo. This is why it stays put and how you place it as it holds itself well.
Answered by: Wolfy
Date published: 2013-05-31

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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