Polyfill...

[ThatChevyGuy 5,000+ posts]

Built a new box, and i think its a bit big, because my subs sound kind of muddy and have a "thunk" noise to them. If i put that cotton shit thats in pillows in my box, will it help, and its 4 cubes, so how much should i put in there.

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[newusername 10+ year member]

http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7168

 

[innsanes 10+ year member]

sealed or ported?

 

[dcyphure 10+ year member]

http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7168

interesting read, although if i have a box at the sub mfc's recommended size, i'm wondering if polyfill should be used at all.

then again i wonder if mfc's recommended sizes are even optimal.

 

[NewToTheGrounds 10+ year member]

persanelly ive used it in a sealed box before and it did wonders for me, i just added a bit at a time till i likedhowit sounded not to sure how to find out exactly how much to add

 

[bassnatzii 10+ year member]

ya polyfill helps out when box is to small ive only used it a couple of times, and when box is to small it does help, pretty much had to pack the box with polyfill and be pushed the subs back in against the polyfill to screw them back in the box, but made a world of a differnce that time it was needed.

also might want to check cross over settings, and box is tuned to, ect ect..

 

[BMW Sidewayz 10+ year member]

The sound wave coming off the back of your subwoofer reacts with the air contained in the box. Poly-Fil 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 Poly-Fil per cubic foot of box volume, I've also heard that it should be around 50% of the enclosure volume.

 

[ThatChevyGuy 5,000+ posts]

figured out the problem, besides subs being brand new, the bass boost was cranked on my amp and didnt know it, and the lpf was all the way up. Sounds great now!

 

[bassnatzii 10+ year member]

figured out the problem, besides subs being brand new, the bass boost was cranked on my amp and didnt know it, and the lpf was all the way up. Sounds great now!

good to hear

enjoy it sounding good now, and when subs break in more you will enjoy it even more

 

[audioholic 5,000+ posts]

figured out the problem, besides subs being brand new, the bass boost was cranked on my amp and didnt know it, and the lpf was all the way up. Sounds great now!

Sweet man, glad you got it figured out. And on your own no less, head and shoulders above most people around here. lol