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How much poly fill should I put in my sub?

post #1 of 8
3/28/12 at 8:53am
Thread Starter 
The sub I currently have is an Audiosource 15 from about 1999. It has almost no fill in it.

According to a few user reviews at audio reviews it helps to put more fill in it.

How much? Fill half, all, really stuff it?

Thanks
Gene
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post #2 of 8
3/28/12 at 11:50am
Most people use 1LB of fiberfill per cubic foot of space in the woofer as their rule of thumb. Or, you can just add it 1/2LB at a time. It’s up to you, since the “right amount” is the amount that ends up sounding best, so you may want to play around with it for a while. When you add it, don’t pack it in too tightly and make sure it fills the entire space.
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post #3 of 8
3/28/12 at 12:30pm
Most use about a 1lb bag per sub. You don't want to make it too tight. Just make sure you get the fire retardant one. You don't want to cause a fire in your sub.
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post #4 of 8
3/28/12 at 1:58pm
Thread Starter 
Quote:
Originally Posted by underminded999 View Post

Most use about a 1lb bag per sub. You don't want to make it too tight. Just make sure you get the fire retardant one. You don't want to cause a fire in your sub.

Thanks for the responses.

I was just planning on ripping open some cheap Walmart pillows and using the stuffing from them. It's a lot cheaper than the free standing fill.

Plus I can't find any locally.

Gene
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post #5 of 8
4/4/12 at 8:48am
you might check over on the DIY speaker sub section.
http://www.avsforum.com/avs-vb/forumdisplay.php?f=155
questions there you may locate sources for it.
I don't know about the pillow stuff...
as was quoted above you do not want to start a fire....or later have it breakdown.
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post #6 of 8
4/4/12 at 9:12am
Thread Starter 
Well I have the fill of 2 standard size pillows in the box plus the little bit that was already there.

Can't say for sure there is a lot of difference. Maybe it's a little less boomy and the output has decreased a little.

It only cost $8 to try. One day I'll get a good sub to replace it with.

Thanks
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post #7 of 8
4/4/12 at 10:05am
pillow stuffing will not remove the boomy from your sub.
to me it is usually where you have it set.
go to http://www.avsforum.com/avs-vb/showthread.php?t=824554
and in the first posting find the audio test tones from realtraps.
it starts out at 10Hz to 300Hz 1 Hz every 10 seconds.
once you get above the 23Hz area that is where most peoples hearing begins.
set your sub for clean sounding tones.

when most people get a sub they want to crank the levels up to get the effects from it.
volume level on my sub is set at 3 3/4 out of 10...and it still can shake my house for a 12" sub.
then set the output level to the sub to a point where there is no distortion of the tone.
be patient.
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post #8 of 8
4/6/12 at 5:39pm
If its sealed, one pound per sq ft. Ported will need to be lined not stuffed like sealed......
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