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Old 13th July 2008, 04:25 AM   #1
thatotherguy is offline thatotherguy  United States
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Default Iso-barik?

So i searched the forums for this, and the best i could figure was that it halves the vas, and lowers the efficiancy. does anyone have experience with these?

I've been considering building a subwoofer, for me space is more of a problem than low efficiency. is this a good option, or is it too much for a beginner like me?
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Old 13th July 2008, 10:27 PM   #2
DaveCan is offline DaveCan  Canada
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Here's a link with a bunch of different Isobaric info topics you can click on.. http://mobile.jlaudio.com/search.php Type ''isobaric ''in the search bar and they should all come up.
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Old 14th July 2008, 06:37 PM   #3
thatotherguy is offline thatotherguy  United States
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awesome! thx for the link man!
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Old 15th July 2008, 01:20 AM   #4
dangus is offline dangus  Canada
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The space saving isn't quite as good as you'd think. The second driver plus "tunnel" occupy some volume. You may be better off mass-loading a driver since this achieves the same effect (lower efficiency) for less cost, and will give a smaller enclosure since you don't need that second driver. Or just start with a more suitable driver; saving the cost of a second woofer should allow a wider choice of good drivers.

The one time I intended to build an isobaric box, I forgot to allow enough clearance for the tunnel, and the resulting single-driver box sounded great, just with a couple dB hump which was quite pleasant.
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Old 17th July 2008, 12:32 AM   #5
jupiterjune is offline jupiterjune  United States
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The first sub I built was an isobaric design. I needed to build it into the back wall of my celica, so I would still have enough room to lay my bike in the back with the rear wheel on.

I turned one driver magnet outward to save the space taken up by a tunnel. It was a really,really great sounding sub.

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Old 17th July 2008, 03:00 AM   #6
Jonny Hotnuts is offline Jonny Hotnuts  United States
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I have on more than one occasion built isos with cheap drivers (jensen 12" for instance) and they sounded 100% better than they did in a standard enclosure.

On that note, I have never heard an iso setup that I didnt like!

If you do a face to face, make sure you have a sepprator between them (I used .75 mdf) or the drivers will distroy eachother.

Good luck and ISO!!!
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