Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
13
See Figure 4. For 25 Vrms line operated speakers, connect them directly to the balanced signal output of
the 300SCW-1. Connect the speakers in parallel to the terminals TB1-4 and TB1-5 of terminal block TB1
on the 300SCW-1. Unlike the unbalanced line output, this output is not switched.
IMPORTANT:
Use the balanced signal output only if there are no SelecTone system devices connected
to the unbalanced signal output (across TB1-1 and TB1-2).
Figure 4 25 Vrms connections
290A7340
SIGNAL LINES
SHIELDED
TWISTED PAIR
MODEL 300SCW-1
AC POWER IN
4 5
17 1
16
TB-1
TB-2
Unbalanced Line Application
For existing SelecTone systems using the 300CK Connector Kit, use the unbalanced signal outputs
on the 300SCW-1. A 300CK Connect Kit is required to connect a 300GC, 300GCX, 300X, 302GC,
302GCX, 302X or 50GC to the unbalanced signal lines. The 300CK properly terminates the signal
lines to the amplifier in the 300GC, 300GCX, 300X, 302GC, 302GCX, 302X and 50GC. Connect the
blue wire on the 300CK to the
SIG COM
wire from the 300SCW-1 and connect the yellow wire on the
300CK to the
SIG HI
wire from the 300SCW-1 as shown in Figure 5.
Figure 5 Model 300CK connections (unbalanced line)
290A7339
300GC
TERMINAL BLOCK (TB1)
ON 300SCW-1
YEL
BLU
YEL
BLU
300CK
300GC
300CK
COM SIG
HI
1
2
SHIELDED
TWISTED PAIR
SIGNAL LINE
TO ADDITIONAL
SELECTONES
Содержание SelecTone 300SCW-1
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