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From: rcd@opus.UUCP (Dick Dunn)
Newsgroups: net.audio
Subject: Re: CD player isolation
Message-ID: <1073@opus.UUCP>
Date: Mon, 4-Feb-85 01:32:55 EST
Article-I.D.: opus.1073
Posted: Mon Feb  4 01:32:55 1985
Date-Received: Sat, 9-Feb-85 09:18:31 EST
References: <282@olivej.UUCP>
Organization: NBI,Inc, Boulder CO
Lines: 29

> The importance of isolation for CD players has been raised
> here several times and seems to nearly rival the situation
> with turntables...

But be aware of the real nature of the problem.  A CD player can recover up
to an extent with its servo, then the error-correction, finally it fails
and (should) mute.  It's not going to distort the sound unless you actually
start doing serious error correcting, and it's not going to damage the disk
the way a turntable can when bounced.

>...I don't own a CD player (yet), but have
> several friends who've lent me theirs for extended periods
> of time and I've found some of them very susceptible to
> shock and external vibration.

Treat this as a criterion when shopping.  Some players are much more
sensitive than others, so look for one that isn't too sensitive.

Keep in mind that current technology produces CD players which will work in
cars or as walkaround units, so a stationary unit CAN be stable.

Most units seem to have rubbery (yes, I know it's really some magic
polymer) feet which do a certain amount of isolation.  It probably would be
a bad idea to defeat this--for example, don't try to rack-mount a CD player
unless it's meant to be, since that will couple vibrations directly into
the cabinet from the rack.
-- 
Dick Dunn	{hao,ucbvax,allegra}!nbires!rcd		(303)444-5710 x3086
   ...Never offend with style when you can offend with substance.