Herbert W Armstrong

PASADENA - A sound-system design aid developed by Ambassador's audio engineers is receiving international attention, according to evangelist Ellis La Ravia, director of Facilities Management The invention, conceived by John Probs and developed with the assistance of David Harris, maps sound-wave projection patterns - and room plans on plastic calibrated globes. Optional equipment shines light from the center of the clear sphere to project sound patterns on a blueprint or scale model - of an auditorium or similar facility. A special screen for photographic purposes was also developed, according to Mr. Prohs. The Syn-Aud-Con professional audio newsletter published by Synergetic Audio Concepts said:

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