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Page 6
Projection Engineering, May, 1930
HOW ACOUSTI-CELOTEX
reduces reverberation .. .
GIVES YOU IDEAL HEARING CONDITIONS
YOUR loud speakers give out from 3 to 5 syllables a second into the auditorium. Ordinary building materials such as plaster, wood and glass absorb only from 2 to 5 per cent of this sound energy . . . reflect all the rest back toward the audience.
Each syllable, therefore, remains audible for several seconds. The audience must pick out from the mass of syllables in the air, the single one which has just been uttered.
The human ear simply cannot perform such a feat — and the inevitable result is a confusion and jumble of sounds that destroy the pleasure of your patrons.
Acousti-Celotex has a high
sound absorption value.* Applied to walls and ceilings according to the exact recommendation of Acousti-Celotex engineers, i t absorbs sound energy when this energy reaches the limits of the auditorium . . . prevents syllables from being reflected in their original intensity permits the true tones of voices and music to travel clear and distinct to the ears of your audiences.
Acousti-Celotex is a permanent correction of theatre acoustics. It comes in single, finished tiles quickly and easily applied over existing surfaces.
These tiles harmonize perfectly with almost any architectural or decorative scheme. They are the
The word
CeiloteX
only acoustical material that can be painted and repainted, even using lead and oil paints, without impairing its efficiency.
The amount of Acousti-Celotex and the proper places for its application can be readily determined by exact scientific methods.
Simply submit your acoustical problems to the engineers of The Celotex Company for analysis and recommendation — without charge or further obligation.
THE CELOTEX COMPANY
919 North Michigan Ave.,
Chicago, Illinois
In Canada: Alexander Murray & Co., Ltd., Montreal
Acoustic-Celotex is sold and installed by approved Acousti-Celotex contractors
(Reg. D. S. Pat. Off.)
is the trademark of and indicates manufacture by
The Celotex Company, Chicago, Illinois
Acousti-Celotex
FOR LESS NOISE-BETTER HEARING
*TYPE BB ACOUSTI-CELOTEX HAS A SOUND ABSORBING EFFICIENCY OF 70%