Too much airspace? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-07-2007
SouthernMudSlinger's Avatar
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Too much airspace?

Im building a new Sealed sub box, and the sub recommends .66-1.00 cu. ft. of airspace, and the box im making (all pieces are cut, just needs assembly) is about 1.30 cu. ft. Tonight, I was looking through the booklet that came with the sub (kicker S10L5) says not to go over the recommended SQ for the box. (says it under Sealed box section). Is this going to be a problem? What would be the reasoning for the book saying that?
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Old 06-08-2007
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you'll be fine. i know if you really big, it'l sound like hot garbage. it should sound good tho.
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Old 06-08-2007
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Kicker subs are known for specific box size requirements, especially the solo-barics.

You can do harm to a speaker if it's not in the proper size & constructed box.

If it recommends 1.0 cu ft max., I'd account for the internal bracing, sub magnet assembly and figure that into the 1.0 cu ft, but not much more.
If your max size is 1.0 cu ft & you use 1.30 cu ft, that's about 20% over & it could shorten the life of your sub or give unwanted performance (same with a box that's too small or poorly constructed).

The actual internal volume can be cheated a bit with the amount of poly-fill you stuff in the box, but I forget the specifics.

The 15" Original (Round) SoloBaric I have states 1.5 cu ft maximum AND gives specific dimensions for the box size to maximize performance.
The spec sheet I received with my sub clearly stated: NO ported box, NO freeair install, NO oversized box, NO udersized box, ONLY the recommended box size... and give it as much power as possible-up to the max. 750w RMS. I'm working on the last one.

I've had my SoloBaric for 15 years or longer, without any problems - but it's been in the same enclosure it came with (built to Kicker specs).
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Old 06-08-2007
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I guess I'll shorten the box to make it about 1.00 then......it will give me more room for my amp.
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Old 06-08-2007
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yeah you will cook them if you have too much air space behind the sub. needs a specific amount for the sub surround to travel back and forth effortlessly....
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Old 06-20-2007
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i had a 10 inch comp, required 1.0 cubic feet, well my box was 2.75 ported, and it was louder and had it for 3 years and it still going...so i dunno, now have a l5 in a kicker vented box, best money ever spent
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