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Path: utzoo!linus!decvax!harpo!ihnp4!ihopa!burris
From: burris@ihopa.UUCP (David Burris)
Newsgroups: net.audio
Subject: Re: More Speaker Questions - (nf)
Message-ID: <127@ihopa.UUCP>
Date: Wed, 4-Jan-84 15:06:40 EST
Article-I.D.: ihopa.127
Posted: Wed Jan  4 15:06:40 1984
Date-Received: Fri, 6-Jan-84 01:07:23 EST
References: <2993@hp-pcd.UUCP> <750@drufl.UUCP>
Organization: AT&T Bell Labs, Naperville, Il
Lines: 21

JBL has somewhat solved some of these problem in their newest line
of professional high-frequency drivers. The drivers
use a diamond-shaped surround to house the diaphram. The diaphram
is a titanium dome with aluminum voice coil( the material the
wire is on, not the wire) with a flat, edge-wound coil. 

I'm not sure of the gap width or flux density but I believe they are
1 cm. and 25,000 nano-webers respectively. 

They are EFFICIENT at approx. 123 db. @ 1 watt. ( Approximate
because I don't have the spec. sheet handy) thus requiring little
power.

I have used these drivers in professional situations and have heard
them in the Cabaret(tm) series loudspeakers in my home, connected to
my stereo, and they are quite impressive.
-- 
	Dave Burris
	..!ihnp4!ihopa!burris
	AT&T Bell Labs, Naperville, Il.