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SUPPORT FORUMS FOR DECWARE SPEAKER PLANS >> Deathbox Support Forum >> Anyone ever build an isobaric DB?
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Message started by SnakeFingers on 01/09/08 at 00:23:30

Title: Anyone ever build an isobaric DB?
Post by SnakeFingers on 01/09/08 at 00:23:30

Has anyone ever built an isobaric DB? Isobarics let you reduce the volume of the box by about half. I think you would have to start with a pre exisating DB as a reference, use the same drivers, decrease the height of the box, and tune it accordingly.

Just curious...

Title: Re: Anyone ever build an isobaric DB?
Post by PC on 01/14/08 at 21:14:48

You must be talking about a DBK10? The DB212 is isobaric already (2 drivers coupled by air cavity) - but you knew this right?
Maybe to your interest, I have built a DB210 (2 x 10") and am very happy with the results.
The drivers were not the ones Steve suggests; mine were more suited to a reflex enclosure, but coupling them has given me a result in a box modelled off the DB212 size and shape that I am happy with.

A few advantages of Isobaric is lower mechanical distortion, and as you said, halving volume required for enclosure, and doubling the power handling for your speaker/sub.
A disadvantage is the efficiency of isobaric config drops 3db compared to the single driver.

Title: Re: Anyone ever build an isobaric DB?
Post by backfixer on 07/20/08 at 00:21:33

PC, i am planning on doing this when I get a larger vehicle. I had a db12 isobaric, loved it! would like to try it with in a 10" version, but what do you do about the insert size, it seems its too small as is.

i just recently finished a ddb10, check it out at the new topic section.