home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.audio.car
- Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!alberta!kakwa.ucs.ualberta.ca!ee.ualberta.ca!demaine
- From: demaine@ee.ualberta.ca (Cal Demaine)
- Subject: Re: Box Volume
- Message-ID: <demaine.725091048@ee.ualberta.ca>
- Sender: news@kakwa.ucs.ualberta.ca
- Nntp-Posting-Host: bode.ee.ualberta.ca
- Organization: University Of Alberta, Edmonton Canada
- References: <1992Dec21.134252.1584@njitgw.njit.edu> <1992Dec21.155117.2370@scott.skidmore.edu>
- Date: Wed, 23 Dec 1992 06:10:48 GMT
- Lines: 33
-
- jreiser@scott.skidmore.edu (Jason Reiser... Asleep) writes:
-
- >To build a box with two identical woofers sharing an air space, you
- >calculate the volume as normal, but enter the Vas as twice the value
- >of one driver. Note that the drivers can be mounted physically out of
- >phase... or course this must be corrected so that they both compress
- >the airspace at the same time... not electrically out of phase. The
- >advantage to this is that lower driver distortion results as a result
- >of the drivers being out of phase with each other physically.
-
- Well, I agree with Jason about the (small) benefit of mounting the drivers
- physically out-of phase. However, I do not see the need for multiplying the
- Vas by two when you can just multiply the end volume by two...
-
- Awe hell, it's just as easy either way.
-
- > Note that doubling the Vas can be done in designing vented
- >enclosures as well.
-
- I'm interested. Does this work? Consider that the moving mass of the cones
- is doubled, the effective surface area is doubled, and the resistance is
- either halved or doubled. Does all this come out in the wash?
-
- > - Jason
-
- - Curious, and likely wrong,
- - Cal
-
- --
- --------------------------------------------------------------------------------
- - Cal Demaine | "You shot him in the back!"
- (demaine@bode.ee.ualberta.ca) | "His back was to me!" - El Diablo
- --------------------------------------------------------------------------------
-