THE MICHAEL TODD COMPANY, INC

THE MICHAEL TODD COMPANY, INC.

ENGINEERING BULLETIN #11

ALTERNATE RECOMMENDATIONS WHEN ONLY 3 PAIRS OF CONDUCTORS ARE
AVAILABLE BETWEEN PROJECTION ROOM AND THE STAGE

HORN NO.
1 2 3 4 5

SCREEN POSITION
LEFT LEFT
CENTER CENTER RIGHT
CENTER RIGHT

RELATIVE POWER
25% 75% 100% 75% 25%

RELATIVE DB
-6 db -1.25 db 0 db -1.25 db -6 db

RELATIVE VOLTAGE
AT HORN NETWORKS
50% 87% 100% 87% 50%

Circuits below may be used when only 3 pairs of speaker leads available from booth to screen.

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ALTERNATE RECOMMENDATIONS WHEN ONLY 3 PAIRS OF CONDUCTORS ARE AVAILABLE BETWEEN PROJECTION ROOM AND THE STAGE
HORN NO.	1	2	3	4	5
SCREEN POSITION	LEFT	LEFT CENTER	CENTER	RIGHT CENTER	RIGHT
RELATIVE POWER	25%	75%	100%	75%	25%
RELATIVE DB	-6 db	-1.25 db	0 db	-1.25 db	-6 db
RELATIVE VOLTAGE AT HORN NETWORKS	50%	87%	100%	87%	50%
Circuits below may be used when only 3 pairs of speaker leads available from booth to screen.