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From: "Phil Allison"
References: <firstname.lastname@example.org> <email@example.com>
Subject: Re: Class B amplifiers: what are the large low-value resistors for?
X-Newsreader: Microsoft Outlook Express 5.50.4522.1200
Date: Fri, 15 Nov 2002 10:39:20 +1100
NNTP-Posting-Date: Fri, 15 Nov 2002 10:29:31 EST
Organization: Telstra BigPond Internet Services (http://www.bigpond.com)
"Trevor Wilson" wrote in message
> > >**Not in this universe. There is only one brand of commerically
> > >loudspeaker, which APPROACHES a resistive load. That brand would be
> > Not entirely true, I think. Some of the KEF models had/have Zobel
> > networks to make their impedances almost purely resistive.
> **Not quite. I believe the Zobels were for the upper bass, lower mids and
> lower treble. There were no Zobels to cover the bass humps.
*** There was a version of the 104 that was resistive across the audio
band. Series tuned circuits were used as conjugates to cancel out the usual
The impedance was 6 ohm + /- 10 % 20 to 20 K
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