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poly-fill in sub box.. does it work?

Old 05-22-2006, 11:27 AM
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poly-fill in sub box.. does it work?

was wondering if anyone had any experience/opinion on the stuff?

specifically for a pioneer single 10"/bassworx box combo i just bought on sale at futureshop.
thanks.
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Old 05-22-2006, 11:43 AM
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yes it does work.

Even in ported boxes (be sure to attach it to the sides) 1lbs of fibrefill per 1 CF is the most beneficial.

In a sealed box it allows the box to appear larger to the subwoofer. up to 20% larger
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Old 05-22-2006, 12:21 PM
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where do i get the stuff from?
just audio places?
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Old 05-22-2006, 12:33 PM
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Walmart is the cheapest place I have found.

Will be called polyfill and ti is in the fabric section for making pillows and the like. Usually couple bucks per lbs.
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Old 05-22-2006, 04:48 PM
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I've had great results using it over the years. It's especially good for space constrained systems, where the box has to be a little smaller than optimum. It's effect seems to diminish as the box size increases though, so it seems to be best for smaller( up to 3.5-4.0 cubes) boxes.
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Old 05-22-2006, 05:42 PM
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Originally Posted by MrSector9
yes it does work.

Even in ported boxes (be sure to attach it to the sides) 1lbs of fibrefill per 1 CF is the most beneficial.
In a sealed box it allows the box to appear larger to the subwoofer. up to 20% larger

in a ported box keep it out of the port or go with sheepskin and line the box
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Old 05-22-2006, 07:49 PM
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thanks all. so just to confirm, this isn't special car audio stuff. and it's called 'polyfill'?

is it the same as 'dacron'?
learning by the minute
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Old 05-22-2006, 08:02 PM
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yes, pillow stuffing, dacron polyester fibrefill, available at any fabric store, department store and many hobby and craft stores.
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Old 05-22-2006, 08:19 PM
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if your going with a ported box make sure u have a wire fence before the port or it will all blow out like cotton candy
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Old 05-22-2006, 08:43 PM
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Originally Posted by boombox
if your going with a ported box make sure u have a wire fence before the port or it will all blow out like cotton candy
I have done quite a few ported boxes, this has never been an issue for me. Just finished building one today, no problems with the fill blowing out the vent.
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