Using The Icp-B6 As A 25 Volt Speaker Zone; Approximate Speaker Zone Wire Loss With The 70.7V Option; Approximate Speaker Zone Wire Loss With The 25V Option - Siemens ICP-B6 Installation Instructions Manual

25 watts. Connect the speaker output as either
Style Y (Class B) or Style Z (Class A). Figure 6
gives the approximate decibel loss for the total
speaker zone wire length for various wire
gauge sizes.
When using the ICP-B6 as a 70.7V RMS
speaker zone, cut the JP1 jumper. (See
Figure 8.)
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 supervision. If the 24
volts is lost or there is an open or shorted
speaker output line, the trouble condition
Figure 6
INPUT DEVICE RESPONSE TOO LOW
displays at the MXL/MXLV and the related
Approximate Speaker Zone Wire Loss
zone LED on the VSM-1 lights.
with the 70.7V Option
The 25V RMS audio input comes from the
amplifier via the ASC-2 Amplifier Supervision
card. The ASC-2 supervises the audio con-
nection 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). Figure 7 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 (See
Figure 9).
Figure 7
Approximate Speaker Zone Wire Loss
with the 25V Option
6