Xref: utzoo rec.audio:7516 sci.electronics:3462
Path: utzoo!utgpu!water!watmath!watcgl!awpaeth
From: awpaeth@watcgl.waterloo.edu (Alan Wm Paeth)
Newsgroups: rec.audio,sci.electronics
Subject: Re: Homebrew audio equipment
Message-ID: <5348@watcgl.waterloo.edu>
Date: 28 Jul 88 17:50:29 GMT
References: <1075@gethen.UUCP> <6315@bloom-beacon.MIT.EDU> <118@luna.UUCP> <5741@pogo.GPID.TEK.COM> <2627@kitty.UUCP>
Reply-To: awpaeth@watcgl.waterloo.edu (Alan Wm Paeth)
Organization: U. of Waterloo, Ontario
Lines: 18

In article <2627@kitty.UUCP> larry@kitty.UUCP (Larry Lippman) writes:
>	While I have not as yet tried this myself, I have a suggestion as
>to a power supply method which will totally eliminate any possibility
>of AC power line hum - use batteries!  The problem of having large
>filter capacitors, inductors, etc. is also eliminated...
>... More realistically, a 30 ampere-hour
>gel cell for such a 100 watt amplifier should last much closer to
>8 hours of normal listening since one is hardly going to deliver a
>continuous 100 watts RMS.

Larry's intriguing idea has another bonus: you can continue to serenade
your neighbors for many hours even after they rip out your power lines.
Or for the neo-Neros: you can listen to the 1812 Overture when WWIII begins.
Briefly.

    /Alan Paeth
    Computer Graphics Laboratory
    University of Waterloo