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From: "Phil Allison"
References: <3DEE2757.EE79B063@crf.canon.fr> <3DEFD744.3A2D8C8D@gv.net>
Subject: Re: audio line specifications
X-Newsreader: Microsoft Outlook Express 5.50.4522.1200
Date: Sun, 8 Dec 2002 11:53:17 +1100
NNTP-Posting-Date: Sun, 08 Dec 2002 11:42:17 EST
Organization: Telstra BigPond Internet Services (http://www.bigpond.com)
"Vlad" wrote in message
> On Sat, 7 Dec 2002 08:19:22 +1100, "Phil Allison"
> > ** Nice trap question from JW.
> > The "correct termination" is one that renders the response
> >The maker may specify a resistance value or you may have to do some tests
> >with square waves and a CRO.
> > A resistor of 100 - 150 ohms is a good starting point. If
> >is a transformer driving the line then that will make it more
> > ................... Phil
> I guess we have to go back to basics
** You can go wherever you like Vlad, and the sooner the better.
> You are confusing impedance matching with equalization.
** You are just plain confused.
> The only purpose of matching the generator ( in this case the
> amplifier and the line ) is to maximize the transference of power.
** How about getting a flat response ??
> To maximize transfer of power the impedance should be equal
** Duh ??
> To maximize voltage transfer, the input impedance should be much
> higher than the output impedance.
** The knee bone is connected to the thigh bone.
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