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Path: utzoo!linus!philabs!cmcl2!seismo!harvard!talcott!panda!teddy!rdp
From: rdp@teddy.UUCP
Newsgroups: net.audio
Subject: Re: RAW SPEAKERS
Message-ID: <988@teddy.UUCP>
Date: Tue, 23-Jul-85 13:58:17 EDT
Article-I.D.: teddy.988
Posted: Tue Jul 23 13:58:17 1985
Date-Received: Thu, 25-Jul-85 08:28:27 EDT
References: <3177@decwrl.UUCP> <975@teddy.UUCP> <914@druxo.UUCP>
Reply-To: rdp@teddy.UUCP (Richard D. Pierce)
Organization: GenRad, Inc., Concord, Mass.
Lines: 31

In article <914@druxo.UUCP> knf@druxo.UUCP (FricklasK) writes:
>I agree in general about horns, but as far as effieciency, ever heard
>of horn loaded woofers?
>   '`'` 
>   Ken
>   '`'`

Of course, the dreaded Klipsch horns. There is a classic example of a design
taken to it's absurd conclusion. The most certainly are efficient, one person
even suggesting that they could run the speakers at reasonable levels off
the output of their preamp with a suitable matching transformer. However, they
suffer from a staggering array of other problems, not the least of which is the
fact that the woofer driver is about 5 or 6 feet farther away than the mid
range driver, which is about a foot behind the tweeter driver (as all of these
drivers sit at the back of the horns). The result time and phase anomolies
aroud the crossover networks lead to some interesting, albeit inaccurate,
reproduction effects.

There is also the ad which appeared in an early 1970's Hi-Fi News and Record
Review (from Britain) which went something like:

		"Complete horn loaded stereo speaker system consisting
		 of 2 massive 12 foot STRAIGHT concrete horns, horn
		 KEF midrange and IonoFane treble units. Excellent fidelity.
		Comes complete with 2 bedroom home with eat-in kitchen,
		large rear garden...
		"

Ah, the British!

Dick Pierce