Speaker Placement; Vertical Placement; Horizontal Spacing - Martin Audio Screen Channel Manual

Cinema series

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CONTENTS

The following guidelines will help in providing optimal aiming and placement

to best match the perceived location of the sound to the picture on the

screen.

8.1

The mid/high horn should be mounted approx. 2/3 of the total screen height

when the screen is masked for the tallest film format. For optimum HF

transmission the MF/HF horn should be placed 100mm (4") from the

perforated screen.

8.2

For a 3-channel (L,C,R) system, L and R speaker channels should be

placed equidistant from centre of the screen image area, so that they are

just inside the screen area when screen is masked for the widest format

(typically 2.35:1). Acoustically transparent side masking should be used to

prevent blocking of HF when side masking is moved in for "flat" picture

format. For 5-channel systems, Left-extra and Right-extra should be placed

equidistant between Left and Centre, and Right and Centre.