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From: rfg@hound.UUCP (R.GRANTGES)
Newsgroups: net.audio
Subject: Re: How to evaluate speakers
Message-ID: <945@hound.UUCP>
Date: Fri, 22-Feb-85 22:06:56 EST
Article-I.D.: hound.945
Posted: Fri Feb 22 22:06:56 1985
Date-Received: Tue, 26-Feb-85 07:29:23 EST
References: <1335@hou4b.UUCP>
Organization: AT&T Bell Labs, Holmdel NJ
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[]
Really sorry, Ed, but auditory memory is so poor that speaker
switching has to be "real time", like with a switch, if you want
to make real comparisons. Several seconds, or, as in the case you 
describe, several minutes, might as well be several hours. I can't
give you a reference on this (probably our friends at Murray Hill
can) but I proved it to my own satisfaction in those wild days
of youth wasted in audio salons. You have to be able to make the 
switch rapidly in order to demonstrate whether or not making the 
switch rapidly makes any difference. I'm sure you could demonstrate
this to yourself. Of course, at this point the truly paranoid says,
Fooey, the nature of interspeaker interference is that when more
than one pair are present in the same room the effect is created
of apparent poor auditory memory. This effect disappears when one
pair is removed.
BTW, those who say more than one pair don't make an appreciable
difference <do not mean> that speaker x in a nice acoustically
good room all by itself is going to sound the same as it does
when in the typical (e.g., Crazy Eddie) showroom with 575 pairs
of speakers. Regards,

-- 

"It's the thought, if any, that counts!"  Dick Grantges  hound!rfg