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Path: utzoo!linus!philabs!seismo!rlgvax!cvl!umcp-cs!dsn
From: dsn@umcp-cs.UUCP
Newsgroups: net.audio
Subject: Re: Speakers
Message-ID: <713@umcp-cs.UUCP>
Date: Mon, 11-Jul-83 13:36:18 EDT
Article-I.D.: umcp-cs.713
Posted: Mon Jul 11 13:36:18 1983
Date-Received: Tue, 12-Jul-83 06:26:51 EDT
References: <789@rlgvax.UUCP>, <409@mit-eddie.UUCP>
Organization: Univ. of Maryland, Computer Science Dept.
Lines: 22


	From: gs@mit-eddie.UUCP

	No, you don't understand about the A/B comparison test.
	I did this at home, with my system, and the volume set
	at the same level.  The speaker switching was done with
	speaker selection knob.

If that's the case, then your A/B comparison test was almost certainly
misleading.  No two types of speakers have exactly the same efficiency;
the same level of input to two different types of speakers will result
in differing levels of output.  Small differences in output level--too
small to be detected as one speaker sounding LOUDER than another--are
usually perceived as differences in quality instead.

The only way to do an A/B comparison correctly is with a meter to
measure the volume produced as OUTPUT from the speaker.  When you
switch from one speaker to the other, adjust your volume control so that
the output level from the second speaker is the same as from the first
one.
-- 
Dana S. Nau