Is my box fine or should i add polyfill

[kurtfromct 10+ year member]

i bought 2 JL 10W0v2 subs, which call for 0.65 cubic feet of volume each. the box i bought says it has 0.64 cubic feet for each sub. would adding polyfill be beneficial or a waste? i did some reading and found polyfill is used to simulate having a larger enclosure then you really have (i think).

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[Slo_Ride 5,000+ posts]

sealed?

 

[RAM_Designs 5,000+ posts]

See if you like it first. If you feel like you're lacking low-end, add some polyfill to see if that helps. If you're still not happy, look into getting a new box.

 

[kurtfromct 10+ year member]

sorry, i forgot to say that its a sealed box. goin behind the back seat in my crew cab

 

[kurtfromct 10+ year member]

See if you like it first. If you feel like you're lacking low-end, add some polyfill to see if that helps.

alright. just curious, do many people with sealed enclosures use polyfill? it doesnt seem like something i hear talked about much.

 

[RAM_Designs 5,000+ posts]

alright. just curious, do many people with sealed enclosures use polyfill? it doesnt seem like something i hear talked about much.

Normally people use it if they're forced to build a box smaller than what is recommended in order to compensate for the lower than normal box volume. It's not terribly common, especially on a forum like this where most everyone is running ported boxes.

 

[kurtfromct 10+ year member]

Normally people use it if they're forced to build a box smaller than what is recommended in order to compensate for the lower than normal box volume. It's not terribly common, especially on a forum like this where most everyone is running ported boxes.

makes sense. thanks

 

[iamamp3pimp 5,000+ posts]

typically you can use about one pound per cubic foot and that will simulate about .2 cubic feet of volume.

anything more is just excessive