Path: utzoo!attcan!uunet!cs.utexas.edu!uwm.edu!csd4.csd.uwm.edu!info-high-audio-request
From: dhs@cs.utexas.edu (Douglas H. Steves)
Newsgroups: rec.audio.high-end
Subject: Re: LS3/5As: Subwoofer Recommendation Wanted
Message-ID: <5605@uwm.edu>
Date: 7 Aug 90 12:48:48 GMT
Sender: news@uwm.edu
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Approved: tjk@csd4.csd.uwm.edu


In article <5596@uwm.edu> jost@ridley.coyote.trw.com (Patrick Jost) writes:
>I've got a pair of Rogers LS3/5As, and would not have anything else...
>however, ... getting them to work with a subwoofer is difficult ...

Yes, it is. The main problem is that the LS3/5A spec includes a rise in
the mid-bass frequency response to simulate deep bass, since they were
originally designed to be control room monitors for the BBC. When a      
subwoofer is included, the result is usually muddy.  
A company named Satterburg produced a subwoofer especially designed
for the LS3/5A a few years back - among other things, it was a stereo
pair which crossed over reasonably high - I think about 225Hz.
If I were designing a subwoofer for the LS3/5A's, I would:
	- use fast drivers (consider using 2 8" vs. 1 12")
	- use sharp (Linkwitz?) crossovers
	- cross over at a higher than normal frequency
	- use stereo subwoofers 

Of course, this may be rather expensive. You may want to consider
another mini-monitor instead. The LS3/5A is no longer the state of
the art, however fondly some of us may remember it.

Doug