Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!uwm.edu!csd4.csd.uwm.edu!info-high-audio-request
From: jfw@neuro.duke.edu (John F. Whitehead)
Newsgroups: rec.audio.high-end
Subject: Re: Leaving components turned on.
Message-ID: <8611@uwm.edu>
Date: 31 Dec 90 15:07:28 GMT
Sender: news@uwm.edu
Lines: 42
Approved: tjk@csd4.csd.uwm.edu
Originator: tjk@csd4.csd.uwm.edu


In article <8587@uwm.edu> hqyy@vax5.cit.cornell.edu writes:

>        On the subject of leaving components turned on as warm improves
>sound quality: inthe case of transistor (or MOSFET) amps or pre-amps
>(such as the mentioned Threshold), this is recommended ...
>
>satish nair

There was recently an article in a computer magazine (PC Magazine?) 
that discussed the pros and cons of leaving electronic equipment on
for long periods of time.  The conclusion is that you will be able
to find an "expert" who will support your decision whichever way
you go.

Leaving equipment on does protect it from power-up and -down surges 
and allows for a constant temperature.  This keeps sensitive components 
(especially ICs and solder connections) from continually expanding
and contracting which may be stressful to the components (one of which
is your wallet :-).  Most electronic equipment is made not to get
"tired" from being left on and should have no adverse effects
from being left on.

But it also is a waste of energy and a source of potential problems
in the case of a black- or brown-out.  Make sure that you at least
have a spike protector.


For myself, I compromise.  For my computer, I leave it on 24 hours
a day except when I know I'll be away from it for more than a 
couple of days.  I often turn off the monitor to save energy.
For my stereo (solid-state) I only leave it on if I plan to use
it again within a few hours.

Remember to always turn your volume all the way down before
turning the power on or off to *any* of your components, or if
you aren't listening to anything!!!

    John Whitehead                     Internet:  jfw@neuro.duke.edu
    Department of Neurobiology                    jfw@well.sf.ca.us
    Duke University Medical Center     Bitnet:    white002@dukemc           
    Durham, North Carolina