sealed box filled with a gas?

[bigbang 10+ year member]

What if you had a vacum inside the box so no sound came from the back of the speaker? And the type of vacum where there is absolutely no gas at all trying to compact itself and a woofer designed to remain centered against atmospheric presure? This probably makes no sense whatsoever but oh well, neither does the subject lol. Brings me to my idea of dual pane vacum filled windows so I dont hear all those darn weed whackers when I'm trying to sleep...

 

[bonesninja 5,000+ posts]

/thread

 

[twisztdauthorit 10+ year member]

What if you had a vacum inside the box so no sound came from the back of the speaker? And the type of vacum where there is absolutely no gas at all trying to compact itself and a woofer designed to remain centered against atmospheric presure? This probably makes no sense whatsoever but oh well, neither does the subject lol. Brings me to my idea of dual pane vacum filled windows so I dont hear all those darn weed whackers when I'm trying to sleep...

then your cones default position would be bottomed out

 

[Trixter 10+ year member]

then your cones default position would be bottomed out

not only that but the box would implode....try building one that would be rated for vacuum...

the last time i read a port like this, that was my response, build a vacuum rated box. but then you'd have the cone issue. in order to fix that you would need to have an equalized pressure outside the box...and now your back to square one.

 

[Radioflyer97 10+ year member]

The idea of a sealed box is to use the air as a "spring" inside the box. Ideally if you were going to try anything with the air, you would want an air valve incorperated into the box. so you would keep the internal pressure exactly the same as the external. Most home built boxes are built and used in the same sea-level in which they are used. Since atmospheric pressure varies from day to day even in the same location, optimum air pressure in a well sealed box can be accomplished by "burping" your sub (unmounting the sub and lifting it slightly)

Filling the box with a gas of different density would require that you have a higher pressure internally to achieve the pressure balance on both sides of the cone. The result means the sub would have to work harder to move the cone into the enclosure than moving it out. (bad for the sub and could damage it)

A good idea would be a small easy-access valve in a sealed box would be a good idea. Just a quick flick of the valve would equalize internal/extarnal pressure.

 

[jdawg 5,000+ posts]

Use propane and hope to god you blow the sub and it sparks.

or he could drive around a bomb car like you with 8 ****en walmart batteries in the trunk

 

[SethPhillips 5,000+ posts]

use gas... like the gas u fill ur car up with... make sure you have some kind of igniter.... that's gunna bang WAMP WAMP!!!

 

[helotaxi 5,000+ posts]

Filling the box with a gas of different density would require that you have a higher pressure internally to achieve the pressure balance on both sides of the cone. The result means the sub would have to work harder to move the cone into the enclosure than moving it out. (bad for the sub and could damage it)

Density has nothing to do with static pressure. Try again.

 

[Imtjnotu 5,000+ posts]

ghost ride the dino