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Path: utzoo!linus!decvax!cca!pbear!peterb
From: peterb@pbear.UUCP
Newsgroups: net.flame
Subject: Re: Re: ... (and KIDS) Headbangers
Message-ID: <6700022@pbear.UUCP>
Date: Tue, 23-Jul-85 00:46:00 EDT
Article-I.D.: pbear.6700022
Posted: Tue Jul 23 00:46:00 1985
Date-Received: Tue, 20-Aug-85 00:04:43 EDT
References: <570@rduxb.UUCP>
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Nf-ID: #R:rduxb:-57000:pbear:6700022:000:1579
Nf-From: pbear!peterb    Jul 23 00:46:00 1985


>Oh, Joey, hit a nerve have we...  don't like what we say so call us
>names.  Why don't you go twang on your out-of-tune guitar to relieve
>the frustration...  Or go play some RATT so your woofers vibrate
>out of their casings...

Hate to say this, but most speaker enclosures are not that efficient at the
lower frequencies. It would be the mids that vibrated loose first, but the
highs would crack long befor the woofer's got humming. A normal acoustic
enclosure put out about 80dB/SPL below 800 Hertz. This is higly dependent
on placement in a room. Placed in the middle of the room with a resonant
frequency far above 600 Hertz, the number is about right. At this point it
would take a hell of a lot of power to make the woofers bounce loose.

Ever see Speakerlab's speakers in action??? The woofer's will swing for over
an INCH which allows them to recreate ACCURATELY 1 aucoustic watt at 30
Hertz. But you pay for it in power.

To produce the bone chilling sounds that RATT can make (or any n=music a=can
make when amplified and acoustically broadcasted at 125dB) would require
massive amounts of power in the low end. Since it is alledged that 1
electrical watt produces 80dB at 800Hz or below, then an additional 45db has
to produced in order to produce ACCURATE 125db in the bass. Since every 3dB
requires a doubling in power, then 45dB requires 32767 times as much. this
means that you'ld have to have an amp of at least 65356 watts(to allow 3dB
of headroom) to produce those bone killing sounds you refer to.

Peter Barada
{ihnp4!inmet|{harvard|cca}!ima}!pbear!peterb