Proper enclosure size?

[Thepistolpete]

If I am building a sub or any speaker for that matter, how do I determine the proper size enclosure? Do I rely strictly on Vas? Why or why not. Also, without the enclosure type known(sealed or ported), is Vas the same? What happens to the sound when the enclosure is larger or smaller than Vas? Too small equals less bass and too large equals sloppy bass, yes?
I am just trying to pick the minds of experienced speaker builders because I plan to build so more speakers in the future and enclosure size seems to be a little art and science.
Thanks, Pete

[sreten]

Hi,

you use a simulator such as WinISD.

Qts in more important than Vas.

/sreten.

[simon5]

I'd say both are equally important, and I would add Fs too hehe!

Yeah, use WinISD Pro, or Unibox, or something else...

[Thepistolpete]

Thanks guys. Looks like I have a lot of learning to do!

[sreten]

Originally posted by simon5
I'd say both are equally important, and I would add Fs too hehe!
Yeah, use WinISD Pro, or Unibox, or something else...

Hmmm... not really IMO.

Qts tells you how to interpret Vas and Fs.

Two drivers with wildly different Vas/Fs values e.g. 50L/30Hz
and 100L/20Hz if the same size and fitted with the same magnet
system will perform moreorless identically in < 30L boxes, i.e.
map to similar Fbox And Qbox.


/sreten.