Question on sub box

[Atvnut2065 10+ year member]

Hey I have a JL Power Wedge box for two 12's. JL includes insulation like cotton in there boxes to supposedly get a better sound from the woofer I'm wondering if I should take this insulation out. I've been using it for like a month now with the insulation in and it hits but I was thinking if I take it out would that give that sub more air space therefore giving me better bass.

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[cyber256 10+ year member]

that fill is in there to slow the sound waves so the subs think their in a bigger box and there for hit harder

 

[more_spl 10+ year member]

ya, thats polyfill.. leave it in there.. if you take it out, you will notice the sound levels decrease.. if they CAME in the JL box from JL, then you know it's right.. but dont take it out...

 

[gibasscarguy 10+ year member]

Polyfill ***** man. It dont matter if JL put it in to fool the box there have been many tests on the effects of polyfill and most people will say it works great for 6X9's and smaller speakers but for subwoofers its just not needed.