"The Other Mike" wrote in message
...
On Tue, 3 Jan 2012 00:53:58 +0000 (UTC),
(Richard Tobin) wrote:
If you were a serious audiophile, you would not allow mains
electricity within a mile of your listening room. You would run your
amplifier on lead-acid batteries and your turntable would be a uranium
flywheel.
In the 1920s and 1930s many "audiophiles" did indeed run their amplifiers
and radio receivers on lead-acid batteries as it was believed to be
impossible to make mains operated equipment totally hum-free (of course
those who lived in rural areas often didn't have the choice).
The original Western Electric cinema sound equipment used lead-acid
batteries for the exciter lamp and the early stages of the amplifier. Dual
batteries were provided so that one set could be on charge whilst the other
was in use.
David.