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From: sjc@angband.UUCP (Steve Correll)
Newsgroups: net.audio
Subject: Re: Speaker fusing (particularly with CDs)
Message-ID: <37@angband.UUCP>
Date: Thu, 10-Jan-85 23:33:17 EST
Article-I.D.: angband.37
Posted: Thu Jan 10 23:33:17 1985
Date-Received: Sun, 13-Jan-85 07:50:08 EST
Distribution: net
Organization: S-1 Project, LLNL
Lines: 17

Speaker fuses need not degrade an audio system if one places them
inside the power-amplifier feedback loop, immediately after the output
transistors; I believe Heathkit used to do this.  (The negative
feedback used in audio amplifiers reduces not just the nonlinearity but
also the output impedance. The impedance of a fuse is much less than
the value of the emitter resistor used in many transistor output stages
to stabilize the bias, and a fuse is probably much more nearly linear
than the output transistors themselves.)

I'm a little foggy with regard to tube amplifiers, but I believe the same
trick might be made to work.

Apropos the comment about a Sanyo CD player not being very shock-resistant,
is it actually less immune than the usual turntable? 
-- 
                                                           --Steve Correll
sjc@s1-c.ARPA, ...!decvax!decwrl!mordor!sjc, or ...!ucbvax!dual!mordor!sjc