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ICP-B6 Connections and Ratings
Approximate Speaker Zone Wire Loss
with the 70.7V Option
Approximate Speaker Zone Wire Loss
with the 25V Option
4. Using the ICP-B6 as a 25 Volt
Speaker Zone
When the ICP-B6 is used as a speaker
zone, the 24 VDC provides the supervi-
sion. If the 24 volts is lost or there is an
open or shorted speaker output line,
the trouble condition INPUT DEVICE
RESPONSE TOO LOW displays at the
MXLV and the related zone LED on the
VSM-1 lights.
The 25V RMS audio input comes from
the amplifier via the ASC-2 Amplifier
Spervision card. The ASC-2 supervises
the audio connection path to the
ICP-B6 and provides up to 100 watts of
power. The ASC-2 can be used as Style
Y (Class B) or Style Z (Class A). Refer to
the ASC-2 Instructions, P/N 315-
092085.
When the ICP-B6 is used as a speaker
zone, the output speaker lines are
supervised and power limited. The
audio output cannot exceed 35 watts.
Connect the speaker output as either
Style Y (Class B) or Style Z (Class A).
The graph gives the approximate
decibel loss for the total speaker zone
wire length for various wire gauge
sizes.
When using the ICP-B6 as a 25V RMS
speaker zone, cut the JP2 jumper.
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