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20 oz of Polyester Fiber Fill

Polyfil Stuffing For Subwoofer Enclosure Box (Polyester Fiber Fill, Poly-Fil)

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List price $9.99

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$5.99

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Get More from your Subwoofer!

If you want to get more from your subwoofer, Poly-fil could be the solution you are looking for! Use this polyester fiber fill when the subwoofers box is smaller than what the subwoofer's air space recommendations are. After the installation, the enclosure can appear to be up to 25% larger than what it really is. Using 1 to 1.5 lbs of Poly-Fil for every cubic foot of box volume will be perfect for the box. At Sonic's low prices, adding Poly-Fil to your subwoofer enclosure is a no brainer!

  • 20 oz of Polyester Fiber-fill for sub boxes
  • Adds better bass to your system by making your sub "think" it is in a larger enclosure...get more from your small space!
  • Made with newer, state-of-the-art batting which decrease movement of fibers
  • Works great in smaller enclosures
  • Also found as: PolyFil, Polyfill

Product History:

Sonic Sub Boxes PF20 thumbnail
(newest, current model)
Mountain Mist DC20 thumbnail
(previous model, replaced by Poly-Fil PF20 )

Accessories Specifications

Type of Accessory
This is the type of accessory that the item is.
Poly-Fil
Primary Color
This is the main color of the item.
White
Quantity
This is the amount of units that is included with the item.
20 oz
Vehicle Manufacturer Compatibility
These are the vehicle manufacturer's that the item is compatible with. Although a manufacturer might be listed here, please verify that your specific vehicle will accept the item or part.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
86%
4 Star
14%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.9
Features
4.9
Design
4.7
Usability
4.9
dimitry

Martinique

Overall
Durability
Value
Features
Design
Usability
étonné

December 1, 2013

je pensais pas que c’était aussi imposant,j 'ai acheté 2 paquets alors que j' en avait besoin que d' un seul.ce paquet de tros n'est pas perdu,je l'utiliserai pour faire un oreiller.
très bonne qualité.

0 of 0 found this helpful

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Alexander

Largo, FL

Overall
Durability
Value
Features
Design
Usability
Very useful

August 5, 2013

I put this in my friend's sealed box. He's got two 10" woofers and this stuff brings out the best in them. Also, you get a lot and I'm positive that it could fill two 15's in a sealed box, maybe even ported (if you're into that) if you wanted to.

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Rob

Prattville, AL

Overall
Durability
Value
Features
Design
Usability
Highly recommend

May 14, 2013

I bought some of this stuff to put in with my two nvx 10's and the sound was great with my box being custom ported. I took some out of one side and played a deep bass song and right away I knew the sound wasn't right like before and I put it back in the side I took out and it was right again. I never thought putting this polyfil in would make a difference but it really does. I highly recommend this stuff if you have sloppy bass because it will clean it up.

0 of 0 found this helpful

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pavel

ellicott city, md

Overall
Durability
Value
Features
Design
Usability
good value.. its just filling.. not much to say.

February 5, 2013

Got the product and put it in my subwoofer box right away. havent tried the subwoofer without it, so i cant say much. good amount of filling for the money though. wish i didnt have to put anything under "Look/Design" and "Durability" because i cant say.

0 of 0 found this helpful

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Apple

Woodbridge, VA 22193

Overall
Durability
Value
Features
Design
Usability
A great value, and it performs!

January 17, 2013

I added this to my wedge box that houses a 10" W6. That in addition to port tuning it REALLY made the sub come alive. People swear I have 2 12's in my trunk....

0 of 0 found this helpful

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1Clean300

Newport News, VA

Overall
Durability
Value
Features
Design
Usability
Great Value

December 21, 2012

Great product and it does make a difference with sound. It makes it seem like you have more speakers than you have. And its enough to fill a dual speaker box.

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Zach and Amy

Norton Shores, MI

Overall
Durability
Value
Features
Design
Usability
Silenced a lot of noise

December 18, 2012

I replaced the blown sub in a Jeep Wrangler TJ arm rest enclosure and left out the packing at first and the base thump was a buzzing drag at the end of each thump with parts of the arm rest vibrating more than I wanted. After I packed it nice and full it deadened the base thump to a nice boom and the buzzing of the arm rest itself is almost gone.

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Max

Queens, New York

Overall
Durability
Value
Features
Design
Usability
Polyester Fiber

September 25, 2012

Great price and More than enough polyester for one box that has 2 12's.

0 of 0 found this helpful

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paul

great falls, MT

Overall
Durability
Value
Features
Design
Usability
Great stuff

June 20, 2012

Great polyfill, was enough for 1 sealed box and 1 ported box, no downsides, great buy.

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Tommy

SF, CA

Overall
Durability
Value
Features
Design
Usability
Works like any other

May 27, 2012

I honestly cannot tell the difference of using poly fiber fill on my daily driver set-up. But since I purchased it, I used it anyways.

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Robert

Lakeland, FL

Overall
Durability
Value
Features
Design
Usability
Deeper bass

March 14, 2012

Makes bass more clear and deep. Can be bought anywhere and I personally recommend poly-fill in sheets.

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rene

Mckinney, TX

Overall
Durability
Value
Features
Design
Usability
Great price, Geat product

February 20, 2012

Used this in a sealed enclosure and worked great, I highly recommend.

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Sam

Daphne, AL

Overall
Durability
Value
Features
Design
Usability
Works perfectly

January 30, 2012

Really works well!

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Steve

Clifton, NJ

Overall
Durability
Value
Features
Design
Usability
Work great

October 9, 2011

Used this to give my sub a little more love. It absorbs a lot of heat from the voice coils, which makes for a longer lasting more healthier and happier sub. To me can not tell much a difference in sound. Still a good product for 5 bucks.

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Mr Slumps

Macon, GA

Overall
Durability
Value
Features
Design
Usability
Poofiest box fill.

October 3, 2011

I recently got these and it is really poofy and seems like its a great buy. Will see how it all turns out.

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Bryan

Pittsburgh, PA

Overall
Durability
Value
Features
Design
Usability
Plenty

August 21, 2011

I have one 12inch sub after filling that up still had enough left for a pillow.

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hector

vallejo, CA

Overall
Durability
Value
Features
Design
Usability
Deep.

February 10, 2011

Made my bass much more deeper than without it. Good to pick it up it's only 5 dollars! Came in next day

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Corey

LindenLinden, MI

Overall
Durability
Value
Features
Design
Usability
Good poly-fil

December 27, 2010

Does what its supposed to do, deepens the bass and gives it more of a full sound. Sounds a lot better.

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vincent

east moriches, NY

Overall
Durability
Value
Features
Design
Usability
nice

December 21, 2010

wow it worked just get it its cheap and will give your subs that low notes

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Johnny

Canada

Overall
Durability
Value
Features
Design
Usability
Wow

November 28, 2010

sounds better!

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Browse 2 questions and 4 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
I built my own Sub box and it's slightly less air space than recommended for the Sub and heard th1is stuff will trick it into thinking it's in a bigger enclosure.
Justin L on Oct 20, 2014
box is a little too small for sub
Bobby K on Aug 9, 2014
Essential for small sealed boxes!
Daniel A on Oct 13, 2014
How can I make the polyfill into sheets in order to attach on the inner walls of my sub box?
Ryan M on Dec 15, 2014
Best Answer: Spray adhesive.
Reply · Report · Brett C on Dec 16, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

DC20

Weight

1.75lbs

Internal SKU

dc20

Internal Product ID

27241

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: 20 oz of Polyester Fiber Fill