Fi Making Subs That Require No Box?

[jonathancullen89]

what happens if u put one in a box, will it ruin the subs or will they just not perform. for how cheap they are they have good xmax and specs. if i could put 6 15" in a 20cu^ft box tuned to 30hz id go FI. i just cant afford q's or bl's

[Forevrbumpn]

free air is not IB

subs look good nick! liking the single 2ohm option

-Drew

Free air IS IB

Infinite baffle is a more technical term- Imagine front wave of the speaker, and rear wave of the speaker only separated by a baffle that is infinite in size... bass is produced not based on pressure compressed in the box, but since the rear wave is canceled to your ears/hearing, you only hear the front wave sound of the speaker, meaning Bass

Bass is only bass , based on phase alignment of front and rear waves, but like in a sealed box platform, you don't hear the rear wave of the speaker, just the front wave of the speaker. A ported box aligns the rear wave with the front wave based on the port

Transmission lines work like this to, it delays the rear wave of the speaker to be in phase with the front wave, creating bass

[meade916]

free air is not IB

subs look good nick! liking the single 2ohm option

-Drew

errr yes it is....sorry man

Free air IS IB

what he said ^^^^

[raytard]

think cutting a sub into your rear deck and not having to build a box underneath it

or like was said before, and like they used to do in the old school installs, mounting them on a flat piece of mdf just mounted in the trunk

its a sub designed to be used without any sort of enclosure, just a baffle separating the back wave from the front wave to eliminate cancellation

they are not intended to go in boxes, be ported, be sealed, etc

they dont take much power

the xmax is nothing amazing

and from IB setups ive heard, its nothing too spectacular, but it does have its applications, most notably just cutting a hole in the rear deck and screwing it in for a low trunk space loss install of some bass (marine subs are almost always IB, jsut because its a pita to build a box inside the hull of a boat, they're designed to have a hole cut and be screwed in

[meade916]

im the opposite, i was actually pleasantly surprised every time i heard a properly built IB setup....they dont sound bad at all if done right.

[Noobtastic14]

dang!! first i said FA and was told it was IB, now i said it was IB and it is FA?

when i searched i thought the difference was the wall separating the front and back waves

ex:

sub sitting on a chair = FA

sub in a wall between rooms = IB

noted: thanks guys

-Drew

[Boon]

I think they generally have incredibly tight suspension to keep the cone under control. So they're not particularly efficient.

They're supposed to go extremely well on the lows though. Also one of the best imaged subs I have ever heard was an infinite baffle setup fired through the armrest hole of a Honda Accord.

[AI James]

old news, these have been talked about over on *** for months

[aznboi3644]

IB is no where near as loud as a proper enclosure...just saves a room and more for sq and having a flat response that gets down really deep easily.

If you put an IB sub in an enclosure it'll sound like crap. Try modeling one.

[meade916]

dang!! first i said FA and was told it was IB, now i said it was IB and it is FA?

when i searched i thought the difference was the wall separating the front and back waves

ex:

sub sitting on a chair = FA

sub in a wall between rooms = IB

noted: thanks guys

-Drew

everyone thinks that the first time they hear the word free-air. They always think "cool, i dont need a box i can just put it on the floor and have bass".....<~~~~~~there was i time (a LONG time ago) i thought that too so im just as guilty. When talking subs, if they are labeled "free air" they are meant to be installed in an IB enviroment.