GAI-Tronics 69460-001 Crew's Quarters Muting Card for Centra-Page Systems - Manual (Page 5)

Pub. 42004-382A
Model 69460-001 Crew’s Quarters Muting Card for Centra-Page Systems Page: 5 of 5
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03/06
Speaker Wiring Distance Guide
Cable distance should be kept as short as possible to reduce the power loss. The following chart
illustrates the correlation between three typical wire sizes and the distance that speakers with integral
drivers or horns with separate drivers can be placed from the central card rack for a –1 dB loss (-20%
power loss). For a 0.5 dB loss, divide all lengths in half.
Table 2.
Speaker Wiring Guidelines for 69430-001 PCBA
Based on ~27 V DC Input to Card Rack Assembly
Wire Size Speaker Output
Connection
18 AWG (0.82 mm2) 16 AWG (1.31 mm2) 14 AWG (2.08 mm2)
8-ohm out 77 feet (23.5 meters) 123 feet (37.5 meters) 196 feet (59.7 meters)
70.7 volt out 2,900 feet (884 meters) 4,700 feet (1,432 meters) 7,500 feet (2,286 meters)
Service Information
If the equipment requires service, contact your Regional Service Center for a return authorization number
(RA#). Equipment should be shipped prepaid to GAI-Tronics with a return authorization number and a
purchase order number. If the equipment is under warranty, repairs will be made without charge. Please
include a written explanation of all defects to assist our technicians in their troubleshooting efforts.
Call 800-492-1212 for help identifying the Regional Service Center closest to you.