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- From: jsvec@umaxa.weeg.uiowa.edu ()
- Subject: Isobarik subwoofer design
- Message-ID: <1992Dec30.044133.27640@news.weeg.uiowa.edu>
- Sender: news@news.weeg.uiowa.edu (News)
- Nntp-Posting-Host: umaxa.weeg.uiowa.edu
- Organization: University of Iowa, Iowa City, IA, USA
- Distribution: usa
- Date: Wed, 30 Dec 1992 04:41:33 GMT
- Lines: 26
-
- I want to build a subwoofer, and have more or less decided to try an
- Isobarik design using two Madisound 12" woofers. I was just wondering if
- anyone out there has had experience/luck in building Isobarik boxes and/or
- has any comments about Madisound drivers.
-
- I am planning on using Madisound's 12204DVC drivers (dual 4 ohm voice coils)
- with the coils of each driver wired in series (8 ohms/driver 200W power
- handling). I have run Madisound's published T/S parameters through
- "PerfectBox" which told me that in a 3.76 cu. ft. cabinet (vented), the
- system would have an "f3" of 22HZ.
-
- I have read a number of articles in Speaker Builder that mention Madisound
- drivers sometimes (?) tend to be way off spec (any comments)? I have been
- unable to find any other drivers with specs that would suggest that they would
- be able to produce large amounts of subsonic (below 30Hz) output in a box
- that is as small as the one that the Madisound drivers (supposedly) require.
-
- I would prefer a higer efficiency driver, but it seems that most high
- efficiency drivers tend to sacrafice low frequency extension.
-
- Any comments/suggestions would be appreciated. Basically, I guess, I'm
- looking for drivers which cost less than $80 which will go flat to 20HZ
- in a less than 5 cu.ft. box...
-
- Thanks in advance.
-
-