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Installation Instructions
Five-inch Speaker and Mic Assembly
78-6911-1545-1
Introduction
The Speaker and Mic Assembly consists of a five-inch, water-resistant, eight-ohm cone speaker, a special
weather-resistant dynamic microphone and a mounting bracket for easy mounting in menu signs, speaker posts
and other applications. Use this product where a separate microphone may provide better voice quality than that
of a combined speaker/mic.
Specifications
Dimensions See Figure 1 on reverse................
Cable Connections Stripped and tinned wires.........
Microphone
Sensitivity -71dB 3db at 1kHz (0dB = 1V/mBar)..............
Impedance 500 ohms 20% at 1kHz..............
Operating Temp. -20 to +60
o
C(-4to+40_F).........
Speaker
Size 5 inches square...................
Impedance 8 Ohms..............
Power Capacity 6 watts maximum..........
Frequency Range 110 Hz to 9 kHz (voice communication)........
Sensitivity 91 dB SPL for 1 watt @ 1 meter on axis..............
Recommended Speaker and Mic Cable
Speaker Use 18-gauge twisted-pair plus shield or unshielded cable....................
Microphone Use 18-gauge twisted-pair plus shield cable. Connect the shield to COMMON...............
at the Intracom end only
.
!
Do not route speaker or microphone cables through the same conduit with
115 VAC electrical wiring. This violates the National Electrical Code,
presents a safety hazard and may cause hum pickup.
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