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From: "Phil Allison"
References: <firstname.lastname@example.org> <email@example.com> <3debaeec.2879341@News.xtra.co.nz> <86$6IEAG7I79EwxN@jmwa.demon.co.uk> <firstname.lastname@example.org> <2xLtFnAG+j79EwhR@jmwa.demon.co.uk>
Subject: Re: 'Current Dumping' Amplifier Circuits ?
X-Newsreader: Microsoft Outlook Express 5.50.4522.1200
Date: Thu, 5 Dec 2002 13:50:06 +1100
NNTP-Posting-Date: Thu, 05 Dec 2002 13:39:12 EST
Organization: Telstra BigPond Internet Services (http://www.bigpond.com)
"John Woodgate" wrote in message
Yes, that is true, but too much power at lower clipping levels or below
> can overheat woofer and mid-range voice-coils and/or rupture cones. I
> expect Phil sees some of those; I'll be very surprised if he hasn't.
** Funny thing - people take their burnt out speakers to those who
business it is to repair them. Which is not me.
Sometimes they do present the offending amp to me to have the
speaker frying devil exorcised but strangely enough he is mostly long gone.
I tell them that amplifiers destroying speakers is normal - like
dogs barking is normal.
I tell them that high frequency oscillations can destroy
amplifiers but not speakers ( tweeters excluded).
Speaker repairers always blame the amplifier and I agree with
them. If the speaker were not connected to an amplifier the damage would
Most re-coned speakers often burn out again quite soon either due
to a repeat of the earlier abuse or bad re-coning workmanship. (particularly
foreign metal particles caught in the gap) .
When this happens the amp and the repairer are most often both
blamed as being possesed by devils.
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