Sealed enclosure filled with Nitrogen?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=77705
Printed Date: May 15, 2025 at 5:58 PM

Topic: Sealed enclosure filled with Nitrogen?

Posted By: luckydevil
Subject: Sealed enclosure filled with Nitrogen?
Date Posted: May 13, 2006 at 2:16 AM

Now I know this is just completely over the top and I would never do it, but I am curious about the effects considering the top race cars in the world are using Nitrogen in their tires because of its properties.

What would the ramifications be from using a gas like Nitrogen instead of air in a sealed enclosure?

Replies:

Posted By: Steven Kephart
Date Posted: May 13, 2006 at 4:26 AM

I doubt it would make any difference at all. The reason they use nitrogen in tires is to control air pressure with increased heat. These temperatures are very extreme, much hotter than what you will see in a sub enclosure.

Posted By: stevdart
Date Posted: May 13, 2006 at 9:01 AM

I imagine the nitrogen gas would diffuse through the woofer cone membrane and in short order the box would eventually contain air, as air would replace it also by diffusing through the membrane. Ported would be out of the question, eh? ;)

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: DYohn
Date Posted: May 13, 2006 at 10:28 AM

If you did it right maybe you could keep your house cool. posted_image

Read this link.

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Posted By: luckydevil
Date Posted: May 13, 2006 at 11:48 PM

DYohn] wrote:

If you did it right maybe you could keep your house cool. Read this link.

That's awesome.

"Your car did 157... well my fridge hits 173." posted_image

From what that article says, it sounds like the world record holders (178db?) should be sealing off their car/truck/van and filling them with helium to hit bigger numbers.

Posted By: kirktcashalini
Date Posted: May 13, 2006 at 11:56 PM

I'd suggest hydrogen instead. Much more well... fun... Just dont be too close to it when you start bumping posted_image

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99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

Posted By: jeffchilcott
Date Posted: May 14, 2006 at 3:08 AM

the world record is measured at 180+ db on one of the most accurate meters is the world. The B&K meter

any industry would not even pay other testing to come see how lous they are maving noise at....therefore they are useing an A weighted meter.

Furthermore. An A weighted meter reads aprox 17-24 decibles off from a non-weighted meter like the term-lab or audiocontol 190...both of which are the same design use as Nasa to measure space shutle takeoff's!

so the 173 becomes 156-149db.......been there done that.......see the vid clips on my site. haha

You know I had to step in, one im drinking, two I am the resident of SPL/loud, 3 im drinkng

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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place

Posted By: jeffchilcott
Date Posted: May 14, 2006 at 3:11 AM

ohhh and back to the orignal question. it has been done( nitrogen in ported box) it was used to super cool the subs and alos propertys of increased SPL.

It has since been outlawed by all sactioned bodys for safty pourpses

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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place