Polyester Fiber Stuffing
Crutchfield Customer Review (What's this?)
Works as advertised!! Great produc
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
The sound wave coming off the back of your subwoofer reacts with the air contained in the box. Polyester fiber stuffing slows down sound waves inside the box, making the subwoofer perform as if the box were bigger. Use 1 to 1-1/2 pounds of stuffing per cubic foot of box volume.
Average Customer Review(s):
Works as advertised!! Great produc
Makes the bass cleaner and louder.
It's stuffing. Works great for stuffing sub boxes, 6x9 boxes, whatever your heart desires. Adds a crisp clean sound
Pros: Soft and warm
Pros: Stuffs good great sound
Bass sounds a little cleaner. Not magic just polyfill
Its polyester fiber stuffing. It makes smaller inclosure sound like it was in a bigger one. Not much else to right home about it.
I built a small box cause I had a tight spaces for the install and my sub sounded like a dud! The poly fill doubled my bass and the techs at Crutchfield knew exactly how much I needed to accomplish my goal!
Easy to separate and install. Seems to help my speakers "feel" more powerful by creating deeper bass in my sound bar.
Pros: Price, ease of use
What can you say, it's fiberfill and it works.
I stuffed 1lb of this stuff in each chamber behind my 12s and it,made a huge difference in the sound of my subs. The bass is deeper tighter and more accurate. Improved my sound 100%.
Pros: Makes bass sound deeper and tighter. Easy to use.
Nice product, come with plenty of fill, works great
Pros: plenty of product
This works perfectly and did exactly what it was supposed to do!!
This stuff makes a noticeable difference. IF your box is a little too small, it slows down the sound waves and gives you the response a larger box would (hey, we don't all drive SUVs). Also, if you like your bass a little less harsh, it mellows is out without reducing the volume or clarity - just takes a bit of the edge off. I have to think that a bit of dampening of the harshest sound waves has to be good for your speakers - whatever radiates from the back of the cone will bounce off of the hard inner surface of your enclosure and back to the speaker (ported boxes may be different). Reducing that excess vibration seems to me to make the speaker sound cleaner. I've used them on 12" subs, 6 1/2" mids and 6 3/4" coax and like the difference in all three.
Pros: Good price. Some say Quilting Batting or pillow stuffing is cheaper, but I've done the math and it isn't. This stuff is sold by the pound while quilting batting is sold by the square yard in varying weights. Do the math yourself (16 ounces to a pound) and you'll find this material is less money.
Cons: No Instructions: the pictures look like you just wad it up and pile it in. If you fill the box enough, that method should work, but using the recommended 1 to 1.5 pounds per cubic foot of enclosure space, I think gluing it to the inside surfaces (especially the back of the enclosure) is the way to go - it comes in rolled or folded sheets - cut to fit, glue in place with spray adhesive and enjoy.
Does as advertised !
Pros: Works great
Cons: None so far
I have the stuffing placed behind 2 eight inch Kicker Comp RT's in the door sub area on my 2011 v6 Mustang.The bass is even deeper & tighter now.
Pros: It works as advertised.Old school technique.
Cons: Wish i could put my 2 Kicker Comp twelves from the mid 90's in there instead:)
I crammed as much of this stuff into my sealed enclosure as I could. I had to really force the speaker very hard and almost sit on it to bolt down to the box because it was so much polyfill trying to keep the speaker from fitting inside the box, but I forced it to fit anyways . The more the better. Now my single 12" sub sounds like 2 x 15" subs in a ported box
Pros: Makes subs sound way much more louder
Had a shallow sub box at .50 cubic feet sub needed .75 cubic feet added stuffing and it made up the deference sub sounds great.
Pros: Great sound and money saving option.
To get the full quality out of any speaker you must use this product. Bass is more full, mids more clear and trebles more rounded. Excellent price and excellent product.
Pros: Easy for anyone to use, great value for the cost
It seemed to help add a little umph to the sub.
Pros: Ease of use.
For the bass your looking for, you need 3 things a great woofer, box and this polyester fiber suffing.
Pros: Tight bass, better quality sound
I got 2 12s 1995 Pioneer Impps in a sealed enclosure and let me tell you I had to double up on the dynamat after putting this in the box! I ordered 2lbs one for each chamber and man does it sound good. I love low bass so this worked perfectly and the bass is accurate,not muddy and no delays. I was skeptical at first but I'm telling you GET THIS!!!
Pros: It does what it says
Built a box knowing I was going to use Very limited space but put the Largest speaker I could with High hopes of this working and was NOT Disappointed!!!!!!!!!!! Made this small box SHAKE THE GROUND!!!!
Pros: No brainer.
This polyester fiber stuffing might be the quickest way to add volume to an enclosure without expanding its dimensions. Product works just as advertised.
Pros: Quick and easy enough, once you figure match the internal volume of your enclosure to the stuffing.
Cons: Could have used a reference to how much is .3 or .7 cubic ft i.e. of this product, and suggestions about optimal installation.
Fantastic product. Great quality polyfill. Came in a blanket type roll that was easy to lay down and trim to size. Much better than loose polyfill competitors. Thick and heavy product that help lower the tone of my subwoofer's driver.
Pros: Density. Blanket style design. Cost
Cons: Waiting for it to come in the mail
I built a box to hold two 10" sub speakers and to fit under the back seat of my 99 Dodge Ram 1500 extended cab. In order to make it fit under the seat, the two enclosures barely made the inimum 0.80 cubic feet of area that my speakers called for. I got two of these and it worked out, as one order fills 1.0 cubic feet pretty good. And the speakers sound great!
Pros: Maximizes the performance of small speaker enclosures.
Got the stuff for good measure, put it in the new box, seemed to sound better than my old box that didnt have it. worth a shot, seems to work
very simple to install,makes a sealed box great.
Does what it says. Good value. More provided than I needed
Pros: Does what it intends to do
Fast shipping, good price.
Pros: Fast shipping, good price.
Made my sub hit a lot deeper its a must have for any sealed box
Pros: All thumbs up
Wrks great made my sub sound deeper
I added this stuff to my down firing sub box outfitted with a 10" Kicker CompRT. Without the stuffing the bass was hitting, but was not as deep as I wanted. I added about .4lbs because my box is .4 cubic ft. Now the bass is a little deeper and or faster songs with a lot of double bass it is much cleaner and less over lapping of the bass drum. Overall for the price I think it is well worth it in smaller boxes to get more ass out of it.
Pros: Easy to use. Cheap.
polyfill works like it should; keep things nice and tight-
Pros: fluffs and settles nicely
This poly fiber will work well if you are filling an small enclosure or if you want to line the inside walls of an enclosure.
Pros: Low price
Cons: The poly fiber is pretty flat and does not expand very well compare to fill an enclosure compare to some other brands of poly fiber.
This is a great way to make your subs think the box is bigger than it is. They fill up the box with easy and produce a great sound.
Pros: Great sound, easy to install
Cons: It's hard to vacuum up off of carpet!
If you want your sub box to sound the best. You need to put this in it!! It is worth every penny you spend on it.
Purchased this a while ago and have used it on several Sub boxes. Used box building software and it told me how thick to apply in the sub boxes. Just use adhesive to glue inside the box. It can help to trick the subwoofer into thinking the box has more internal volume. Worked great with a pair of Infinity subs and with a pair of JL subs. I would definitely buy again when I need to build more boxes.
Pros: Low Price, fair amount of stuffing, Helps to minimize box size
I'm sure this product works well, but I never used it as the box I purchased already had poly fill in it.
Right now I have a 15" kicker comp vr getting 500 watts rms to it and a little over a 2 cubic ft box. I got 2 orders of this and put it in and I gotta say, it definitely works. Just like everyone else is saying it makes it produce a lower sound, makes your car rattle more, and let's you crank more power to your sub without distorting. I found it works great for rap songs. Cuz with a 15", it's always hit the lows well, but the higher frequency rap songs my sub sounded like it didn't want to play them as well. Now with the stuffing it plays those better too. The downfall to this stuff, with my set up at least, is that songs that don't have a lot of bass to begin with get more deadened. Like some rock and classic rock. I have to crank up my bass twice as high to achieve the same sound I had to begin with.
Pros: Substantially increases your bass for rap/hip hop. Good price. Easy to install.
Cons: Kind of deadens the bass on songs that had little bass to begin with like some rock and classic rock. It's like these songs benefit more from the air volume in the box you sacrifice, rather than the stuffing. But it seems you can turn your bass boost up to twice you normally use to and acheice the same sound you had
this price is not what they should charge for this, unfortunetly they do. I have a custom box with 1.332 cu. ft inside vol. with a 300rms MTX 10" subwoofer. I have one or two tracks I usually play to push subs when we get new stuff to see what they are made of. Speaker before stuffing sounded really good, super bassy, and had a strong push you can feel. I ordered a pound (16oz) bag and not enough for recommended volumn. I wanted to see what the material was made of. Soft pillow stuffing is all that it is. I bought a 10oz bag of coarse stuffing and had plenty now. I stuffed the box and I have to say, the same songs, same bass and settings had more of a (bare with me) clean "Bhmmm" and less "Bhaah" sound. I'm lucky to have had the opportunity to try both ways and I am a strong believer that sealed boxes with the right set up can't be beat. This has been a hobby of mine since I could drive a car. Stuff your sealed boxes to solidify your tones.
Pros: Residual sound dampening and muffling. Stuff your box if your not satisfied with your sub. Still not happy? Buy a new sub but, keep it stuffed.
Cons: More is not always better!!! If you pack stuffing in the enclosure too much where it starts to become dense, you are LOSING volumn and Defeating your purpose. My woofer and I cannot tell the difference. Do your homework 1st. I only gave it a 3 because of the price. 5 stars if it were more reasonably priced.
stuffing works fine would be better to get the right box instead of having to use the stuffing
I gave this product 4 stars, becasue I used it in a ported box and I also think it's a little on the expesive side for what it is. If I would have used it in a sealed box I'm sure I would have given it 5, despite the price. This stuff does exactly what it says it does. I am able to send more power to my 8" Alpine type R ( in a Sound Ordnance ported box), and not experience the distortion that I had before. The sound is cleaner, more accurate and slightly deeper. The difference is noticable, but not drastic. I recommend this product.
Pros: sound is cleaner, more accurate and slightly deeper
Cons: pricey for what it is
I got 900 watts going to a Polk 10". It hits
Pros: Good for small boxes
Cons: Should be $2.
I have 2 JL's in tightly sealed box with only .7 ft^3 space, so I thought this would do little to improve my sound. Man was I wrong!! I added a 1lb. to each woofer and I can't believe how much tighter and accurate my subs sound now. Not to mention it really makes it easier when setting up your front stage. WHY DIDN'T I GET THIS 5 YEARS AGO?!?!?
After replacing my entire Bose premium (?) sound system on my 350Z I started having a lot of distortion especially from the sub I mounted behind the driver seat. I started my distortion killing project by spending 2 days on covering the doors and all around the sub box with Dynamat. I got pretty good results, but I was not satisfied. Then I started checking the specs for the sub and sub box and figured my sub box is a little smaller than it is supposed to be comparing the specs of the sub. I decided to get a bigger custom sub box for my sub and installed it behind the seat. Again, I had an improvement but there was still distortion coming out of the sub. I was pretty frustrated after spending about $300 and days for Dynamat and sub box replacement and I started checking for my options and I decided to give this polyester stuffing a try. My sub box is about .7 cubic ft. so I put 1 pound of this stuff in the box and turned the system on. The result is UNBELIEVABLE!!! Distortion was completely gone and I was able turn the volume on a lot more than I did before with no distortion from the sub at all. Don't get me wrong, not only this stuff but everything I did on the system helped to have a nice system. But this stuff made the biggest difference for me.
I have used this stuff before in sealed subs with great results. So when I needed to take out the hollow-sounding boom in my rear speakers, this stuff really fit the bill. My rear speakers (Dodge Dakota) are mounting in huge empty body spaces, and you could here a terrible booming sound at the resonent frequency of the cavity. I stuffed the cavity with fiberglass insulation in the lower part (they are huge spaces) and topped them off with this stuffing. The result was outstanding! The big boom is gone and all I have is tight clean bass. Now when I add the sub (sealed box on rear seat), it will not have to compete with the big boom - all that's left will be clean bass from 40 Hz to 200 Hz. Highly recommended!
I purchased this stuffing with my 2 subs and my box. I can surely tell you that the bass is a lot clearer and also hits harder than not having it. I would recommend this stuff to everyonee who wants that added clarity to their subs!!!!
This makes bass really nice and crisp. Would recommend anyone to buy
i have a sony 10in xplod truck box. when i first hooked it up, it sounded fairly decent, accurate, and handled my hard rck music well. i decided to put some filler in it...stuffed it FULL (the filler was coming out of the speaker cutout! lol) hooked it back up, and the sound was louder, very tight and accurate, and it doesnt distort as much if at all. i HIGHLY recomend this stuff to anyone with a sealed box looking for less distortion, higher volume, and deeper, tighter bass.
I was extremely skeptical when I ordered this stuffing. I went ahead and did it because it was cheap and the two 10's under the back seat of my chevy truck just didn't sound very good. I had previously had the same two subs and the same amp hooked up in my car in a type 2 trunk box and they were awesome, but in the truck they just weren't very loud and seemed to distort way to easily. I ordered two pounds of this stuffing and it surprised me how big it was when it came in. As I started to stuff my box with it, I thought "man, this is rediculous! There's barely enough room in this box for all this stuffing." But I stuffed it all in because my box is two cubic feet and a pound per cubic foot is recomended. I put the subs back in, and man what a difference! I can turn my system up twice as loud as before with no distortion and much deeper, fuller sounding bass. In addition to being able to up the volume, I was able to turn up the gain considerably on my sub amp. This is the cheapest and one of the best improvements I've ever made to my system.
Using polyester fiber stuffing to 'fool' a subwoofer has long been a widely held belief, that honestly, doesn't really make a lot of sense.<BR><BR>I took an 8" subwoofer, and mounted it in a well designed, but slightly too small, enclosure. Inside, I placed the appropriate amount of polyester fiber stuffing.<BR><BR>I used a real time analyzer at 12db/oct resolution. (Most are only 3d/octave, this is a very revealing device.)<BR><BR>And, I played pink noise from 20-100hz. Pink noise is when every octave of sound has the same energy.<BR><BR>I did an A/B test, using this test equipment with and without polyester fiber stuffing.<BR><BR>The result?<BR><BR>When polyester fiber stuffing is added, a small amount of low end response and overall volume is lost. The same result as robbing the enclosure of airspace. <BR><BR>The exact opposite of what it is supposed to do! <BR><BR><BR>Polyfill does have its uses - In a completely square box it can break up standing waves.
Polyester Fiber Stuffing is an old trick used to trick a sub into thinking that the box is larger than it is. I would recommend adding polyester fiber stuffing to sealed boxes although some ported boxes benefit from adding it. For sealed boxes, using the roll or weave polyester fiber stuffing is recommended. For ported boxes, using the rolled polyester fiber stuffing is recommended as the weave will break apart and escape through the port. <BR><BR>Recommended amount is 1lb of polyester fiber stuffing for every cubic feet
Once I had my enclosures finished, Type #1 sealed box, one JBL GTO 8" sub per box, .35 cubic foot inside dimension, 200 watts RMS per sub, I put the Polyester Fiber Stuffing in one. I read a review on the website that said the it made a huge difference between a box with and without it, so I had to check it. I took both boxes, (one with polyester fiber stuffing and one without), and hooked the subs up to the amp. in my other vehicle since I had the boxes done before I had my amp. wired up in my Jeep. I hooked up the box filled with polyester fiber stuffing first and cranked it up. The sound produced was a tight, kick in the chest pound. I pulled the wires from it and hooked up the one without the polyester fiber stuffing. The sound wasn't as loud and it was muddy. The sub was vibrating and working WAY too much for what I was getting out of it. The polyester fiber stuffing made a HUGE difference in the sound quality of the sub. If I could give this a rating higher than 5 I would. It made that much of a difference. <BR>
Recently I purchased about 2 lbs to stuff in a 2 cubic foot total, 2 chamber downfire box that was pre-fabricated to fit in my 2000 Dodge Ram. After a side-by-side comparison of two trucks with my (2)Infinity 10" 1030w's & my neighbor's (2)Infinity 12" 1230W's, there is a BIG difference! With the same exact voltage running to our amps, same voltage cd players, same caps, and everything MINE is significantly louder and deeper. Not only does the bass hit harder because of this Polyester Fiber Stuffing, but you can turn the volume up even more without it distorting. <BR>WITHOUT the Polyester Fiber Stuffing the sound from the subwoofer seems to resonate throughout the box and create a hollow effect.<BR>WITH the Polyester Fiber Stuffing the sound from the subwoofer is more precise and more air is able to be pushed through the subwoofer cone, thus able to generate more bass.<BR>Overall, this is a great product & I would recommend this to everyone with a small or truck box.
I bought two pounds for a custom built 52 inch box holding two Kicker Comp 8 icnh subs. I noticed a much smoother and harder hitting bass after I stuffed the two separate chambers. I would recommend this for any custom built box. I think it definitely absorbs the sound waves and my two 8s' now sound better than the two 10's previously had in my truck!
I originally purchased 2 lbs of this to fill a box that I built that had over 2 cubic feet of volume. Well I didn't hear much of a difference. Then I Took the Polyester Fiber Stuffing out of my box and used it for my friends box that we had cut apart to make it smaller to fit in his camaro. When it was installed in that box....MAN What a BIG difference! It sounded like the subs were getting an extra 75 watts! Anytime you have a small box I suggest the use of Polyester Fiber Stuffing, especially truck boxes.
To make it sound better [ SAMSON Nov 16, 2017 ]
I chose the fiber stuffing because it states "make your sub feel like its in a bigger box" which I assume means it will have a better sounding bass. [ Brydan K.D. Nov 03, 2017 ]
Fill for factory subwoofer enclosure. [ John Nov 03, 2017 ]
better sound [ B Oct 13, 2017 ]
To receive cleaner sound from my custom speaker enclosure [ Micah Sep 21, 2017 ]
fiberfill makes the speaker think it is in a larger enclosure. [ MICHAEL Aug 22, 2017 ]
fill for subwoofer box [ DAVID Aug 15, 2017 ]
Reliable and good price. [ G Aug 11, 2017 ]
Improved cleaner deeper sound! [ Bannon Aug 09, 2017 ]
Needed for sound [ STEPHEN R. Aug 05, 2017 ]
Just to try. [ MICHAEL Jul 03, 2017 ]
It was highly recommended by other customers based on their reviews. [ Jose Jul 01, 2017 ]
For my sub box I already have [ Kory Jun 16, 2017 ]
Recommended [ joshua Jun 13, 2017 ]
I needed it for my new sub and box for my truck. [ Lonnie Jun 12, 2017 ]
Seemed like a good idea [ robert May 17, 2017 ]
to make a small space seem bigger [ shane May 11, 2017 ]
More boom small box [ JASON Apr 26, 2017 ]
for subwoofer box [ RICHARD Apr 25, 2017 ]
I chose this item because it is a great addition & I haven't been offered a convenient option to fill an empty speaker mount void before. [ Hanssel Apr 22, 2017 ]
Purchased new Sub Box... it did not have stuffing with it. .so I purchased this fiber stuffing for the new box..... [ TIMOTHY J Apr 12, 2017 ]
I was watching an upgrade video on YouTube and they recommended using this in the front install as there's a sound difference between the sound bar and the front without it. [ Jonathan Mar 12, 2017 ]
Thought I would Try it Heard good things about it. [ M Mar 03, 2017 ]
It was recommended after I added two subwoofer to my cart. [ Michael Mar 02, 2017 ]
Better sound! [ belkis Feb 22, 2017 ]
to make my speakers sound bigger and deeper [ Michael Feb 09, 2017 ]
Box is right on the edge of having the min space for subs [ Dominic Dec 27, 2016 ]
Needed this for my subwoofer upgrade. [ Raymond Dec 21, 2016 ]
to see if it helps with sound quality [ rodney Dec 17, 2016 ]
Makes the subwoofer feel like its in a bigger box by slowing down sound waves. A must [ Kent Dec 12, 2016 ]
I chose this to help with the sound of my new sub woofers since the box i had was so small. [ John Dec 02, 2016 ]
going to build a small sub box, [ Paul Nov 25, 2016 ]
To improve the bass response of my sound bar speakers. [ Robert Nov 25, 2016 ]
I just want to try it out ! [ Kurt Nov 23, 2016 ]
to enhance my speaker sound that goes into small OEM housing [ Yoon Nov 07, 2016 ]
Crutchfield stated it made your subwoofer think it was in a bigger box. [ David Oct 14, 2016 ]
I have a two similar set ups with 10" subs, I notice the one with the stuffing sounds better then the one without it. [ Ignacio Oct 10, 2016 ]
Wanted to see if it would the bass tighter and more responceive and the results of this stuff blew my mind my subs sound 100 times better. [ Kyle Oct 06, 2016 ]
To get better sound out of my subwoofers. [ Dennis Sep 13, 2016 ]
To use in a Select Increments center console [ shawn Aug 25, 2016 ]
Putting Mid-bass speakers in door pods that aren't quite up to air volume specs. Hoping this material will help the sound and protect the speakers. [ Danen Aug 14, 2016 ]
This item really helps make your Sub Woofers in your Sub box's sound so much better. I recommend this minimal investment to anyone looking to get better sound out of there system. Sincerely, Sean [ Sean Jul 31, 2016 ]
I owned a 12" Kicker solo baric L7 and I fitted it firstly without the filling into a ported box and it was good, but then I tried it with the filling and the difference in depth and clarity of notes was very noticeable. I recommend to anyone who cares about having a solid sounding system to fit there box with this. [ Mikhail Salter Jul 25, 2016 ]
Because it works...i still have 2 12"Kicker Comps in a box that i purchased from Crutchfield 1996!!. Will use this fiber stuffing to put into the door subs area in my 2011 v6 Mustang:) [ JEFFREY Jul 21, 2016 ]
Small sub in a small box, chose stuffing to increase its sound quality. It did the trick, and was fairly easy to handle. A little linty, but that's to be expected. Recommended. [ Todd Jul 12, 2016 ]
I read in your site that make the sub thinks is in a bigger box, thanks for the good info. [ LUIS Jul 06, 2016 ]
Used to fill a sub-woofer enclosure. [ Albert Jun 30, 2016 ]
Based on tech recommendation. [ Maurice Jun 16, 2016 ]
Used to fill excessive air space in sound bar on wrangler jk [ tim Jun 15, 2016 ]
i remember as a kid that setting my "boombox" on a pillow or cushion of some kind would make the bass sound much warmer, clearer, and louder. The thought of just tossing my sub in a hollow wooden box seems inferior to a well insulated box. [ Christopher Jun 12, 2016 ]
increase the perceived box volume. I don't have that much space [ Dustin Apr 28, 2016 ]
Had a less than desirable amount of space in my sub box. Using this on a reccomendation from Hogan to help combat my small space issues. Hogan's Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=122 [ Ben Apr 04, 2016 ]
To get a better sound [ Shaunathan Apr 03, 2016 ]
The speaker box i built was slightly smaller and the stuffing will help with the woofer and the quality of sound it will produce. Hopefully enhancing the bass. [ Will Mar 02, 2016 ]
I want my subs to sound better [ Andrew Jan 31, 2016 ]
I built a sealed, square box for a new re audio sub. I bought the polyfill to line the enclosure and eliminate standing waves. [ Nicholas Jan 04, 2016 ]
I needed some polyfill to stuff my sealed box. Since I didn't feel like physically going to the store to find it ,I opted to order it from Crutchfield instead. I figured the polyfill found in stores might be less dense (less suited for car audio), so I decided to save myself the trouble and use my reward points. :) [ Gilberto Dec 16, 2015 ]
Have old subs and boxes for pick need 1 cubic foot I'm about 80% hopefully the poly will help or will have make new boxes [ David Dec 10, 2015 ]
I used the Polly fill behind 5x7 speakers in my motor home and it works great. [ George May 23, 2017 ]
It certainly wouldn't hurt! Give it a try listen and if you like it, than your done. If not you can always pull the Polly fill back out. [ Harold May 23, 2017 ]
It won't hurt anything to try it. It's possible you could get better tone out of the low end. [ SETH May 23, 2017 ]
When you add polyfill you are tricking the sub into thinking it's in a larger enclosure by slowing the rear waves . It's not used to make enclosure smaller. Hope this helps [ jacob Mar 29, 2017 ]
I'm not sure it makes a big box smaller, It makes a small box seem bigger. Please ask one of the techs they should know for sure. [ Roland Mar 28, 2017 ]
Well that is not technically how it works. Polyfill just makes it seem like that there is more air in a box. In order to accomodate for the necessary amount the sub requires. So the answer is a no. Keep looking for a box or switch to a different pair of subs that closely match a box. [ Juan Mar 28, 2017 ]
The Polyfil is made of Polyester which is not flammable and does not ignite easily. I hope that helps. My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=5 [ Ryan Jan 06, 2017 ] Staff
Hi I'm Alan I myself think the stuffing helps make the box not sound hallow or vibrate the box. When you us use the stuffing fluff the stuffing in the box once you have ran the wires to the out side inputs. In general the stuffing makes the bass sound just a bit hard because the subwoofer has back pressure. [ ROBERT Nov 26, 2015 ]
I've put Poly stuffing in every sealed sub box I've had. Doing so will make your sub perform as if it were in a bigger box. I've found that in sealed applications it produces a harder/punchy/accurate response at the bottom of the frequency range, not necessarily louder. Hope this helps. [ MICHAEL GREGORY Nov 26, 2015 ]
If you want to use speaker baffling, this is a much better material than fiberglass. Small pieces won't break off that can enter your speaker. That said, adding this material won't make the sound any louder. It typically is used to smooth out the lower frequencies so the music is more natural sounding and less 'boxy or boomy.' Don't stuff the box tight. Use a small amount, pull it to fluff it out, and very loosely fill the enclosure. The effect is more noticeable with larger enclosures with woofers, but even in a smaller box it can make the sound more natural. Hope this helps. Allen [ Allen Nov 26, 2015 ]
I forwarded your question to an Advisor and they responded with the following: I'd get 2 packs. You may end up with a little left, but this should be sufficient. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy Jan 21, 2015 ] Staff
It works fine in a ported box. [ Roland Mar 28, 2017 ]
Unlikely to come out the port. Not sure stuffing works well in a ported box though. [ BRETT May 05, 2015 ]
If you fill the enclosure with stuffing, it should not move. I should also make sure you fill around the port and not inside of it. [ NORMAN Jan 18, 2015 ]
Just stuff the correct amount in the box. [ STEVEN Dec 03, 2014 ]
Just stuff it in [ JOHN J Nov 21, 2014 ]
Stuff it! What size box are you using? Used it in a compact box with a 12" Kicker. [ JEREMY Nov 21, 2014 ]
David, Personally, I did my best to increase the thickness of the stuffing by lightly pulling on it from different directions. Once it was fluffed up, I gently put into the enclosure trying to not to pack it down and loosely filling the inside of the enclosure. You want the sound waves from the woofer to be slow down as it passes through the fibers. If the fiber is packed to tight it will act more like a wall and part of the sound wave could be bounced back to the backside of the woofer casing distortion and possible reduce the life of the woofer. If the enclosure will be moving around, you might want to spray the inside of the enclosure with Spray Mount or some other types of spray adhesives. To keep the fibers from shifting around. I hope this helps. [ NORMAN Nov 21, 2014 ]