[Jet-Lee]

http://forums.clubrsx.com/showthread...&threadid=7402

Originally Posted by post #13

Infinite Baffle: This is basically a free air mounting of the subwoofer. If is extrememly effecient, takes up very little space in some cases and can offer some very good sound if done correctly. Driver choice becomes a huge factor in IB setups. You will preferably want a reasonably high Qtc because the system Q will relect that number. .5 to .8 would be a good range to consider.

http://www.dictionary.com

Infinite Baffle - a flat surface that completely isolates the back wave of a driver from the front without a standard enclosure.

http://72.14.207.104/search?q=cache:...s&ct=clnk&cd=9

Free air mounting uses the trunk as a "box." Please note that rear hatch covers do not isolate very well and are not usually strong enough to support the weight of a subwoofer.
Advantages : Free air is easier, quicker, and cheaper. It can also fill up less trunk space.
Disadvantages : In most cars, the trunk leaks to the passenger compartment. Therefore, free air mounting will lose bass output compared to a boxed woofer. Since the woofer is not loaded by box air pressure, it handles less power.
Tips : Reinforce the factory rear deck and seat back, and caulk any remaining openings to the passenger compartment. Of course, this can be more work than making a proper enclosure!

http://www.caraudiohelp.com/custom_c...udio_boxes.htm

Infinite Baffle "Enclosure"
The simplest enclosure type is an infinite baffle or free air system. Note: Free-Air™ is a trademark of Stillwater Designs (Kicker) In this system the woofer has the front of its cone isolated from the back of its cone by mounting the woofer to the rear deck or on a board placed across the back of the rear seat.


Advantages of this design include simplicity, minimal occupation of space and lower cost due to not having to have a box type enclosure.

Disadvantages of this design are a larger power requirement, difficulty (sometimes extreme) in completely isolating the two sides of the cone from each other, and slightly less accurate sound reproduction.

http://www.polkaudio.com/forums/showthread.php?t=8306

Originally Posted by post #10

Now that we understand that, lets get back to the free-air misnomer. There is no such thing as Free-Air. It's properly referred to as "Infinite Baffle".

Wow. Mount the speaker in a single baffle to isolate the rear wave from the front wave.

Do you wish me to keep editing this with proof?