New to home audio, help on a box?

General discussion for all questions based in the home audio/video world.
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young_gun
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New to home audio, help on a box?

Postby young_gun » Fri Sep 22, 2006 8:12 am

Hey hey, just getting into the home audio section of all this. got some cheap surround sound system and since i have two eD 9kv.2's laying around I want to build a HT box for them and run them off the sub channel (200-350 watts iirc) any idea on what a good air/tuning would be? LIke I said I have no experience with HT so help guys! Lol
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Kyle Richardson
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Postby Kyle Richardson » Fri Sep 22, 2006 9:08 am

Typically, home sub enclosures are larger and tuned lower than car enclosures.

I havent modeled the drivers, but most DIY home theater subs are tuned around 20Hz. Since these are smaller drivers they probably want to be tuned higher than that so Just model them up with a tuning anywhere from 20-30Hz there and see what they look like.
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KU40
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Postby KU40 » Fri Sep 22, 2006 9:41 am

Started a reply this morning but was in a rush to get to school. I was just gonna say to do something like 1.5-1.75 cubes at 25 hz.
-Nick aka NS1 aka mopey aka speedbump
Alpine CDA-9827
Crossfire CFQ5.2
JL Audio XR 650csi components, Planet Audio TT2300
Crossfire VR404 on factory rear 6x8's until I get them upgraded
SI 15D2 + 3.8 @ 30 hz + Crossfire BMF 1000D = :)
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young_gun
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Postby young_gun » Fri Sep 22, 2006 1:24 pm

^^2 posts^^^^ Ok thanks for the starter info. KU, is that all? I was thinking it'd be more like 2-3ft. But i guess with only 8" drivers they dont need that much. ANy other things I should know?
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KU40
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Postby KU40 » Fri Sep 22, 2006 4:28 pm

well I was basically just doing 1.5x recommended box size, and ED recommends .5 for each sub. Just have to remember that .1 is a much greater part of .5 cubes than it is of 5 cubes, so increasing a box by just that much will affect a smaller enclosure more than a larger enclosure.

going larger, up to 2 cubes, would basically be like putting your average 15" in an 8 cubic foot ported box (twice recommended).

I guess your power range is a little broad. if your amp supplies 350 watts, you'll reach full excursion in as little as 1 cubic foot for both. if it's lower, down towards 200 watts, might take 1.5-2 cubes to reach it's potential. if you have winISD you can plot both boxes and see the power curves.
-Nick aka NS1 aka mopey aka speedbump

Alpine CDA-9827

Crossfire CFQ5.2

JL Audio XR 650csi components, Planet Audio TT2300

Crossfire VR404 on factory rear 6x8's until I get them upgraded

SI 15D2 + 3.8 @ 30 hz + Crossfire BMF 1000D = :)

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