The first commercial stereo that I'm familiar with was done by Cook
Labs. The LP was divided in half for the left and right tracks. The tone
arm looked like a large tuning fork (each cartridge picked up one
track). When it was right it was great. If one of the heads was off one
groove it was horrible requiring an adjustment to a small adjusting
screw which would move the heads either closer together or further
apart.
thorenstd124@xxxxxxxxx 3/18/2008 12:52:23 PM >>>
I had read about the 1881 system,but have never actually heard anything
about it.
Oh,BTW,your file won't play on a Mac.
I would assume the Bell Labs stuff,is from those 1979-80 Lps,that
nearly every classical Lp collector owns.
Don't forget that Edison supposedly had some expensive,and cumbersome
system,that involved three channel/three horn playback.Perhaps someone
could give me more detail.
Roger
Steve Abrams <steve.abrams@xxxxxxxxx> wrote: I have uploaded two files
to Mediafire
One file, Bell Labs Keller, has two brief programmes on BBC Radio 3 c.
1981 about the Bell Labs experiments in the early 30s and includes a an
extract in stereo. I am afraid that Arther Keller does not confirm my
story
about the Black Box. (74MB)
http://www.mediafire.com/?111zkxoddxz
The other file, 1881 Stereo, is a brief Radio 3 broadcast in 1981 about
the 1881 stereo transmissions from the Paris Opera, and demonstrates the
sound characteristic using reconstructed microphones on the stage of
Covent Garden. (27MB)
http://www.mediafire.com/?dfg1lwgi9aj
The files are in Flac format. They can be played directly in Winamp,
VLC Media Player, Super (c) etc. They can be converted to Wave using
Flac
Front End, Goldwave etc.
The files are taken from a Scotch Metafine tape with Dolby C. The
original recordings were made by me but the tape I used may be a dubbing.
However, the sound quality is acceptable.
Steve Abrams
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