Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

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640 C. R. DAILY [J. S. M. P. E. type 805, eight-cell high-frequency horn, this entire unit being mounted on top of the low-frequency speaker cabinet and enclosed in the main console housing. The higher-carrying-capacity theatertype high-frequency horn and driver unit were used on account of the high volumes occasionally demanded of this equipment. LightWeight, Low-Level Speaker System. — Frequent use is found for a high-quality, light-weight speaker system, for the following uses: (a) low-level playbacks requiring the horn to be inconspicuously located very close to the singer, and of such quality that the FIG. 4. Horn console cable compartment. acoustic leak from the speaker to the microphone will match in quality with the same music subsequently re-recorded from film, (b) horn hung on the camera dolly and carried along to follow the action, (c) a horn carried along the side line of the action. For these services, which can not readily be handled by the larger two-way horn system, a Western Electric 750-A speaker has been mounted in a small Celotex-lined box, as shown in Fig. 8. This horn unit may be connected to the output of the console amplifier in place of the normal two-way system, and is protected from overload by a 12-db pad. The excellent quality of this speaker has been very useful for lowlevel playback service as a supplement to the two-way system tor the same service.