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SKOURAS ROUTE 17 DRIVE-IN THEATRE— Left to right are Phil Taylor, projectionist; Joe Kelly, designer of new sound system; Walter Heaney, manager, and Spyros Lenas, zone manager, gathered around the new equipment discussed in IF for November.
necting to designated barrier strips.
Special input facilities consist <>! a booth microphone mounted <>n one of the rack panels, a phonograph mounted on a sliding drawer also in the rack and a selector switch feeding an \ltt-c L566A pre-amplifiei connected for 150 ohms output. Iliiamplifier feeds the signal bus in place of the film input through a latching relay, the control ol which is available at each projector operating position as well as on the rack. \ 2 circuit push button located in each Century optical sound head de feats the special input amplifier simultaneously with the sound change-over function with a special circuit arrangement through the latch relay contacts to cut-off power to the relax during normal changeo\ers while film is in progress.
Monitoring facilities consist of a 111 position selector switch to connect the outputs of the power amplifiers to an audio output meter and a transistor monitor amplifier and speaker. The output meter has a calibrating
attenuator .die. id ol it to permit the meter to deflect to "O" when normal level is present at each segmenl ol ill. Field. W iih this facility the projectionist can (|iiickl\ balance the levels on all amplifiers b\ running a louo c\cle loop in either of the projectors operating the selector and obsen \i\ii the meter deflection.
The concession building is equipped with eight ceiling speakers inside and two outside under a portico: the patio theatre is equipped with lour and the playground, two \tlas coaxial outdoor speakers mounted on posts. These speakers contain linematcliing transformers, the impedence of which is adjusted for a power level in each area that will permit the same gain setting on Amplifier 9 that is present on the other amplifiers. In addition, four rheostat potentiometers are installed on the ramp distribution box to permit individual volume control or cutoff of sound to each of the special locations without affecting the amplifiers gain setting. iP
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by Christie
International Projectionist December. 1963
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