probably a dumb question but quick question about pollyfill - Car Audio Classifieds!
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  #1  
Old 03-01-2011, 10:37 PM
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Default probably a dumb question but quick question about pollyfill

i am insanely curious. Pollyfill is suppose to make air flow slower and make the area supposedly be bigger. so if i fill a trunk that has no amps or batteries in it with pollyfill would this supposedly make it bigger? or be a waste of money.
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Old 03-01-2011, 10:39 PM
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Look up aperiodic membranes. USD Audio can custom make them for you based on the sub you're using.

EDIT: AP Mats are expensive but will do what I'm assuming you are trying to do with an IB setup and 25# of polyfill.
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Originally Posted by 80INCHES
just build the box and sit back and let the bass flex the $hit out of ur ride
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Old 03-01-2011, 10:42 PM
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Originally Posted by Hertz5400LincolnLS View Post
Look up aperiodic membranes. USD Audio can custom make them for you based on the sub you're using.

EDIT: AP Mats are expensive but will do what I'm assuming you are trying to do with an IB setup and 25# of polyfill.
Im trying to make it feel bigger to the subwoofers when it really isnt when air is being forced into the trunk. but my god you guys know everything haha
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Old 03-01-2011, 10:45 PM
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Tutorials at SpeakerWorks/USD Audio
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Quote:
Originally Posted by 80INCHES
just build the box and sit back and let the bass flex the $hit out of ur ride
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Old 03-01-2011, 10:47 PM
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Originally Posted by Hertz5400LincolnLS View Post
where the hell do i purchase this stuff? i mean how expensive is it too.

EDIT: i found it but is there anything else?
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Old 03-01-2011, 10:48 PM
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i was trying to simulate a bigger enclosure than what it was.
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Old 03-01-2011, 10:48 PM
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You can make your own AP mat with fiberboard or fiberglass. Making it correctly is challenging because it takes a lot of testing to tune properly.
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Quote:
Originally Posted by 80INCHES
just build the box and sit back and let the bass flex the $hit out of ur ride
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Old 03-01-2011, 10:51 PM
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Quote:
Originally Posted by mattintc10 View Post
where the hell do i purchase this stuff? i mean how expensive is it too.

EDIT: i found it but is there anything else?
You can buy it from them but they are expensive.
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Quote:
Originally Posted by 80INCHES
just build the box and sit back and let the bass flex the $hit out of ur ride
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  #9  
Old 03-01-2011, 10:53 PM
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Quote:
Originally Posted by Hertz5400LincolnLS View Post
You can make your own AP mat with fiberboard or fiberglass. Making it correctly is challenging because it takes a lot of testing to tune properly.
an infinite baffle really doesnt have a specific tune. if i can simulate the trunk being bigger i can get a lower tune. in creating it i was curious could i use fiberglass insulation to simulate a bigger enclosure?
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  #10  
Old 03-01-2011, 10:55 PM
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Quote:
Originally Posted by mattintc10 View Post
i was trying to simulate a bigger enclosure than what it was.
That's what an AP Mat does. Here is an example of an AP enclosure without the resistive elements installed...the AP mats are the back wall of this enclosure. You make the enclosure as small as possible and replace one wall with an aperiodic membrane.

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Quote:
Originally Posted by 80INCHES
just build the box and sit back and let the bass flex the $hit out of ur ride
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