How much polyfill?

[Russxtreme15 10+ year member]

I have a box that is 1.016 ft^3 and i want to make it 1.5 ft^3 with polyfill... how much do u think i should add? Thanks

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[Naxis2k1 10+ year member]

rule of thumb is 1lb per 1sqft

but dont hold me to that.

 

[DirtySchemer 10+ year member]

I don't think 1.5 can be made from a 1 cube box, maybe 1.3 - 1.4,

 

[cjjackson85 5,000+ posts]

I don't think 1.5 can be made from a 1 cube box, maybe 1.3 - 1.4,

x2 That extra .1cuft just won't happen. Polyfill just won't cut it. //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

Edit: And since that .1cuft will make such an impact, you better start over. //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[shltplease 10+ year member]

How can adding fill to your box make the volume greater?

 

[UndercoverPunk 5,000+ posts]

How can adding fill to your box make the volume greater?

It doesn't, it messes with the waves inside the box, slows them down or something, causing the speaker to act as though it's in a larger enclosure..

 

[bri487 5,000+ posts]

It doesn't, it messes with the waves inside the box, slows them down or something, causing the speaker to act as though it's in a larger enclosure..

right. polyfill is often misused. many times people think it makes the sub act as though it is in a larger box. when used correctly it should only be used for fine tuning the box. it is only a tuning tool. if you have the wrong box, then it is simply wrong and polyfill wont help you. if i use it at all i would usually use around 50% in the main cavity of the box, but it really depends on the initial performance of the box.

 

[bcarpenterfhl 10+ year member]

hope this helps. also, it specifically states that it does trick the sub.

 

[swaptrex 10+ year member]

so when you are running a sealed box, is polyfill really necessary? if so how much?

 

[bcarpenterfhl 10+ year member]

read the f**king sh1t!

 

[BOOKER 10+ year member]

Thanks for that info bcarpenterfhl, very useful.

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