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From: terryl@tekcrl.UUCP
Newsgroups: net.audio,net.auto
Subject: Re: Inexpensive car stereos
Message-ID: <721@tekcrl.UUCP>
Date: Mon, 26-May-86 05:17:38 EDT
Article-I.D.: tekcrl.721
Posted: Mon May 26 05:17:38 1986
Date-Received: Wed, 28-May-86 04:17:08 EDT
References: <2808@jhunix.UUCP> <339@ur-tut.UUCP> <457@vaxwaller.UUCP> <533@polaris.UUCP>
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In article <533@polaris.UUCP>, herbie@polaris.UUCP (Herb Chong) writes:
> In article <457@vaxwaller.UUCP> davet@vaxwaller.UUCP (Dave Triplett) writes:
> > 50 Watts in a car?  Wouldn't that be a little loud, especially with
> > efficient speakers.  I use a system that on a good day will put out about 5
> > Watts, drive a car with a dying muffler, and cruise at 60+ with the windows
> > down and have never had (or wanted to ) turn the radio to full volume.
> 
> one manufacturer's 50W is not another's 50W.  a power specification
> that is not to FCC standards is not very meaningful unless it is
> more stringent.  some manufacturers state that their amp is a 200W amp.
> it is measured at 50W into one channel only at 1kHz at 10%THD.
> when measured with all channels operating at 20-20kHz at 0.1%THD, it
> is a 10W/ch system.
> 
> Herb Chong...

     It's even worse than that. Car amps do not have to state RMS power,
as is required of home gear if you're gonna quote power. So a car amp
manufacturer can even state that his amp puts out 200W, but only for a
micro-second before it burns up. As far as I know, car amp manufacturers
do not have follow anyone's standard qhen quoting power.

				Terry Laskodi
				     of
				Tektronix