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MANAGERS AND PROJECTIONISTS 1237
be the absolute, irreducible minimum. In excess of that the more the better.
As to width, that is a mooted question but there must, for the best results, be ample space between projector, both motion picture and other sorts, to permit of free movement. Where the projection distance and picture size is such that a sharp picture may be obtained all over the screen with a four and one-half foot spacing lens center to lens center of motion picture projectors, that distance should be the minimum. However, conditions may be such that this would be impractical, but under any condition there must be no less than a three and one-half foot spacing lens center to lens center. In fact, this may be the rule for all but the motion picture projectors.
Of course space must be allowed for the amplifying panel, etc., and this should be done in future whether sound is to be immediately installed or not.
This is not designed to be anything more than a general discussion of dimensions. Your committee hopes, in the future, to take that item up in more complete form.
CONSTRUCTION. — Your committee conceives the fundamental requirements of projection room construction to be :
(a) The room must be thoroughly fireproof.
(b) It must be as nearly as possible soundproof, because of the fact that in addition to the unavoidable noise incident to machinery in operation we now have added the necessary conversation between the augmented projection staff, the additional noise created by certain types of sound equipment, and rising above this the output of the monitor horn.