That's possible - we're talking over thirty years ago. On 13 February 2011 01:24, David A. Jewell <[email protected]> wrote:
> my thought would be that if it was a tube [valve in british] amplifier > then it > might be a non-power related harmonic. If it is a solid-state amp then I > don't > know what could be causing it except to say that it would be another > component > within the system that is perhaps resonating. > Paxmaha > > > > ________________________________ > From: John Burch <[email protected]> > To: The Horn List <[email protected]> > Sent: Sat, February 12, 2011 5:13:02 PM > Subject: Re: [Hornlist] Musicianship > > At 10:31 AM 2/12/2011, you wrote: > >We had a lecturer at college whose party trick ... > > > >"I always switched on the stereo", he said. "Try it next time > >you're there and listen - it hums a > >perfect concert A" > > Something,s not right here. > If in England where the power is 50 Hz, the hum harmonics would be > 100 Hz, 200 Hz, 400 Hz. > That's not very close to 440. > If in the US with 60 Hz power, the hum harmonics would be 120, 240, 480 > Still not very close to 440. > Not what I'd call a "perfect" concert A. > What' up with that? > Or > Are they close enough that nobody can tell the difference? > > > > --------------------------------------------------------------------------------- > > John Burch > West suburban Chicago > o|||||||o > The surest sign that intelligent life exists in the universe > is that it has never tried to contact us. > Calvin of Calvin & Hobbes > > --------------------------------------------------------------------------------- > > > _______________________________________________ > post: [email protected] > unsubscribe or set options at > > https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/paxmaha%40yahoo.com > > > > > > ____________________________________________________________________________________ > We won't tell. Get more on shows you hate to love > (and love to hate): Yahoo! TV's Guilty Pleasures list. > http://tv.yahoo.com/collections/265 > _______________________________________________ > post: [email protected] > unsubscribe or set options at > https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/yateslawrence%40googlemail.com > -- Lawrenceyates.co.uk _______________________________________________ post: [email protected] unsubscribe or set options at https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/archive%40jab.org
