Rep Power: 0

What does VAS mean on a sub. I know it deals with enclosure airspace, but it doesn't make sense. The Perfect 12.1 has a VAS of 83.28 litres, which when converted to ft^3 is 2.94. How in the heck could this sub need that much space, since they recommend somewhere around 1 ft^3? Any info on the other terms (Qts, etc.) would be appreciated. Thanks guys.

 
Rep Power: 0

Please let me direct ye on the right path !!.

installer.com

Cheers
Mohawk

 
Rep Power: 0

I wish the definition was in english. Any more help?

 
Rep Power: 346

"Vas - Volume of air having the same compliance as the woofer suspension."


What i think is that it's the volume of air that is displaced by the movine cone, so the surface area times the vertical suspension. I'm not sure at all.
-Ed

 
Rep Power: 346

hmm, i just re-read your post and now my answer makes no sense! sorry [IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
Rep Power: 0

a subs VAS is the amount of airspace required to get nearly (theoretically exactly) same response from the sub as you would having the sub free-air. ..

Simplified. If you have the sub in a sealed enclosure of the VAS size..it should have the same tonaity and transient response as though it were free air.

Cheers
Mohawk

 
Rep Power: 0

Thanks man. That makes sense. Only thing is, why would I want my sub to sound like it were in free air??? Those kinda subs sorta suck, don't they?

 
Rep Power: 0

Free air subs are differenct.. I mean it will have the same transients as that same sub will have free air..not a sub that;s designed for free air use...

 
Rep Power: 0

I know that much, I just don't understand why I would want to know how to MAKE a sub SOUND like a FREE-AIR sub. What the heck is the point of that?

 
Rep Power: 0

for designing enclosure it's VERY VERY important as i lts you know how stiff the subs own suspension actually is.