[QCWA] theater sound

[Troy Wideman]

I helped my father install some of those in the early fifties. Also, we 
added the "wrap around" speaker systems that went with the 80 feet or so 
wide, curved screens. I built the amplifiers for the wrap around systems. 
They picked up the audio from separate 1" tape drives that had ( I think) 
six tracks. The three behind-the-screen speaker enclosures picked up audio 
from the projector (or dual projectors for true crossed polarized lense type 
of 3D , not the Red/Green lense glasses).

73,
Troy, W6HV

--------------------------------------------------
From: "Norm Gertz" <k1aa at cfl.rr.com>
Sent: Saturday, September 27, 2008 12:17 PM
To: "QCWA" <QCWA at mailman.qth.net>; <Ham-Radio-History at yahoogroups.com>
Subject: [QCWA] theater sound

> To those interested in the entry of "talkies" in the movies in the late 
> 20's;  go to:
>
> http://mixonline.com/TECnology-Hall-of-Fame/wesern-electric-vitaphone-090106/
>
> For many years, theatres had a huge speaker enclosure behind the movie 
> screen.....it was usually the RCA "Voice of the Theater".....had 
> remarkable performance for that day and age.
>
> 73   Norm  K1AA
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