Will this work

[Nickfireblazer 10+ year member]

I've got a dual 15 sub box in my Explorer. Its a pretty small box for a pair of 15s. Anyway I got a bag of polyfill yesteday and I wanna put it in when I get some new 15s. Will the polyfill make a big difference? I hope so...I want my jaw to literally drop to the floor //content.invisioncic.com/y282845/emoticons/omg.gif.05aa02c3095d6ce9338996654eca0863.gif ...no but seriously an spl increase would be nice.

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[BDIDDY 10+ year member]

It should, I was reading a review a guy did on that stuff on sound illusions and he said it made a big difference. Said his sub was tighter when it went high and hit a little lower too, I think.

 

[nosaj070 10+ year member]

I wouldn't hold your breath, it may help, but there is only so much you can do when the enclosure is real small. If you want your jaw to drop, put them in recomended airspace in a ported box tuned to 32hz.