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  #1  
Old 02-02-2011
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Icon5 Stuffing a box

sorry for the misleading title :p

I just put an alpine 10" in my ext cab with a sealed box. Sounds pretty good considering i haven't really tuned it yet and it was my first install. Anyway just wondering if it was pretty much standard to stuff a sealed box with polly filler or not and how will this change the sound. Had to position the sub facing rearward due to shape of the box if that matters at all.

thanks
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Old 02-02-2011
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from what i've seen, Sealed and ported is like 6 to one and half dozen to another. i have a sealed sub box cause its a false floor, and it sounds alright.
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Old 02-03-2011
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Stuffing is generally only used for artificially increasing the internal volume of the enclosure.
You usually only use it when your box is slightly too small.
Poly fill you can help make up for an enclosure difference of up to 35%

If the box is too small then poly will lower the resonate frequency of the sub.
It will allow the sub to play slightly lower and it will sound less punchy and tight.
Same thing that would happen if you bought a slightly larger box.

The best thing to do is to do is dial in your settings first.
Then if you feel it still sounds too tight then you can start to experiment with different quantities of poly fill.
Remember to keep it away from the actual sub as much as possible so that it does not interfere with its ventilation.
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Old 02-04-2011
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Quote:
Originally Posted by RangOH View Post
Stuffing is generally only used for artificially increasing the internal volume of the enclosure.
You usually only use it when your box is slightly too small.
Poly fill you can help make up for an enclosure difference of up to 35%

If the box is too small then poly will lower the resonate frequency of the sub.
It will allow the sub to play slightly lower and it will sound less punchy and tight.
Same thing that would happen if you bought a slightly larger box.

The best thing to do is to do is dial in your settings first.
Then if you feel it still sounds too tight then you can start to experiment with different quantities of poly fill.
Remember to keep it away from the actual sub as much as possible so that it does not interfere with its ventilation.
thanks for the info, just found the specs on my sub/box. the sub recommends just over 1 cubic foot and the box is .75 cubic foot, so I'll stuff it and that should help
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Old 02-04-2011
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usually the idea is 1 LB polyfill per square foot. so you wont need too much.
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Old 02-04-2011
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Quote:
Originally Posted by RangOH View Post
Stuffing is generally only used for artificially increasing the internal volume of the enclosure.
You usually only use it when your box is slightly too small.
Poly fill you can help make up for an enclosure difference of up to 35%

If the box is too small then poly will lower the resonate frequency of the sub.
It will allow the sub to play slightly lower and it will sound less punchy and tight.
Same thing that would happen if you bought a slightly larger box.

The best thing to do is to do is dial in your settings first.
Then if you feel it still sounds too tight then you can start to experiment with different quantities of poly fill.
Remember to keep it away from the actual sub as much as possible so that it does not interfere with its ventilation.
Exactly! :O
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Old 02-04-2011
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Wirelessly posted (Blackberry 8530)

I would agree with pretty much everything RangOH said, with the exception of tweaking your settings first. A system will perform best when the least amount of EQ tweaking is needed. When you tune the physical characteristics of the box first, you are allowing the speaker and amp to work more efficiently. Using an EQ to compensate for a poorly-tuned box is basically forcing the speaker to fight the resonances in the box. You use up more power this way. If the box is tuned you will have more headroom (available volume) from your system.
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Old 02-05-2011
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Quote:
I would agree with pretty much everything RangOH said, with the exception of tweaking your settings first.
I was talking about the gain, crossover, and subsonic filter.
Your correct, any EQ settings should be done after everything is setup properly.
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Old 02-05-2011
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Really, you shouldn't even mess with the EQ on your amp unless you want to clip it like a b!tch.
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Old 02-05-2011
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I've moved my EQ around, but i'm an Audio Engineering major, so taking certain frequencys and moving them around to a more likable setting isn't too hard, i actually took my lower frequency's out. i like my music clear, not over powering.
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Old 02-06-2011
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Originally Posted by rangerboy101 View Post
Really, you shouldn't even mess with the EQ on your amp unless you want to clip it like a b!tch.
That's only going to happen if you're boosting a lot. Proper use of an EQ is to start by removing unwanted or overpowering frequencies. This will not cause any clipping.


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Originally Posted by StxDangerRanger View Post
but i'm an Audio Engineering major
LOL. So we've heard multiple times.
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Old 02-06-2011
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Originally Posted by ME00Stepside View Post
LOL. So we've heard multiple times.
LOL, this is exactly what i was thinking.. Its getting ridiculous..
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Old 02-06-2011
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This is interesting. Thanks for that info
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