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Voice Alarm Modules
4-16 AFP-300/AFP-400 Installation PN 50253:C1 05/22/97
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Follow these guidelines when connecting VCM-4 speaker circuits:
3. Speaker circuits are supervised and power-limited.
4. Use twisted-pair cable for wiring speaker circuits.
5. Maximum speaker circuit wire resistance depends on wattage required for each
speaker.
6. Use only UL-listed speakers rated for 25 Vrms.
7. For systems with AA-100 amplifiers, you can use 70.7 Vrms speakers. Use 4.7K,
2W ELRs with 70.7 Vrms speakers.
8. Install End-of-Line resistors according to Table 4-11:
Table 4-11 VCM-4 Speaker Resistor Requirements
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Figure 4-16 shows typical speaker wiring for a VCM-4 module:
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For ELR connection to devices... Use resistor part number...
with terminals 71252
with flying leads 71245
used in Canada also include N-ELR Resistor Plate
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