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Path: utzoo!watmath!clyde!floyd!harpo!ihnp4!ihnss!knudsen
From: knudsen@ihnss.UUCP
Newsgroups: net.games.video
Subject: Vectrex audio buzzing
Message-ID: <1983@ihnss.UUCP>
Date: Wed, 28-Mar-84 20:27:28 EST
Article-I.D.: ihnss.1983
Posted: Wed Mar 28 20:27:28 1984
Date-Received: Fri, 30-Mar-84 01:04:44 EST
Organization: AT&T Bell Labs, Naperville, IL
Lines: 15

People have asked me about the buzzing sound(s) that Vectrx makes
while running.  Some even thought there was something wrong.
Well, the three units I've seen all do it the same.
The buzz is independent of volume setting, so cranking up the knob
all the way is a big help, if family can stand it.
The buzz must be getting in between the GI sound chip on the lower PC
board and the audio power amp IC on the side board.
Noise comes from the deflection amps, and you can hear it change pitch--
gets way down when the system is very busy, and more complex when
there is lots of stuff on the screen.  Helps give you a feel for how
hard the machine is working at any moment, but yes, it is a PEST.
You who have tapped off the audio into your stereo system-- how much
of the buzz comes thru there?
Anyway, there's nothing wrong with your machine, just cheap
(ain't we glad?)	mike k