Surely though until some really good source material was available it was
all a bit academic?
Brian

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"Phil Allison" wrote in message
...
Jim Lesurf wrote:


I've recently been working though Wireless World issues from the 1930s and
1940s, looking for info on the ancient history of audio/hifi.



** The beginnings of hi-fi audio occurred in the 1930s, in relation to film
sound. The need for decent sound quality in cinemas spurred the development
of large single ended & push pull amplifiers using triodes plus two way,
horn loaded speaker systems using 15 inch woofers (often with field coil
magnets) and multi-cell tweeters.

Westrex and RCA were the leaders in the USA while Vitavox was their
equivalent (with speaker systems)in the UK.

Immediately after WW2, scaled down versions of cinema amplifiers and
speakers were produced for home hi-fi, with names like Leak and Quad in the
UK and Klipsch in the USA.



.... Phil