Specifications

W1 = OPEN
NAC/CC=NAC
CLASS "B" ZONES AND EXPANSION
REQUIRES UL LISTED 10K OHM EOLRs AT END
OF EACH CIRCUIT WHETHER THE CIRCUIT IS
USED OR NOT.
10k OHM
EOLR
10k OHM
EOLR
L
W7
TB6
TB5
TB4
TB1
TB2
N
AC
DC IN
DC OUT
BATTERY
AUD2 OUT
AUD1 OUT
STB2 OUT
STB1 OUT
EXP OUT
SPARE
C
NO
NC
T
R
B
AUX RET
AUX IN
AUD RET
AUD IN
SPB-160
MOTHERBOARD
NAC
OUT
IN OUT
IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
NAC
OUT
IN OUT IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
SPB-160 WITH TWO
SP4-APS SPLITTERS
SP4-APS SETTINGS
SW1(NAC/CC) = CC
SW2 (CLASS A/B) = B
OUTPUT AUDIO VOLTAGE
JP1 CLOSED = 70Vrms
OPEN = 25Vrms
CLASS "B" ZONES AND EXPANSION
REQUIRE UL LISTED 10K OHM EOLRs
AT THE END OF EACH CIRCUIT WHETHER
THE CIRCUIT IS USED OR NOT.
PA GE
VOLUME
JP1
STANDBY / RUN
USB
D27
D25
D17
R7
-AUDIO
OUT
+AUDIO
OUT
TB3
RS485
+COM1
RS485
-COM1
TB5
- POWER
+ POWER
TB6
- BGM
INPUT
+ BGM
INPUT
TB2
TIP PHONE
IN
RING
TB1
R17
BGM VOLUME
JP1 SETTINGS
1-2 - ALERT PAGE TONE
2-3 - NO ALERT PAGE TONE
RS485 COM1 ACTIVE
D24
RS485 COM2 ACTIVE
TROUBLE
D29
SPLITTER MISMATCH
D28
RS485 COM LOSS
D26
USB
SP4-TZC
SP40/2
24VDC
Power Supply
Background
Music Source
J3
_
_
+
_
+
+
TB6
_
_
+
_
+
+
TB4
TB3
_
_
+
_
+
+
TB2
_
_
+
_
+
+
TB5
STB OUT
RET
STB IN
NO
NC
A
L
M
T
R
B
NO
NC
COM
IN3
IN2
IN1
NR
TEL
BGM
AUDIO OUT
CC/NAC
AUX IN
_ +
24V
COM
POWER
SYSTEM
RESE T
UL LISTED
10K OHM EOLR
SP40/2 PC BOARD
CC
OUT
IN OUT
IN
OUT
IN
24 VDC
AUDIO
RS-485
ALARM
POWER
TROUBLE
Z1
Z2 Z3 Z4 EX1
EX2
IN
CLASS
B
A
NAC
CC
SW1
SW2
SP4-APS
JP1
SETTINGS FOR BOTH SPLITTERS
SW1(NAC/CC) = NAC
SW2 (CLASS A/B) = B
OUTPUT AUDIO VOLTAGE
JP1 CLOSED = 70Vrms
OPEN = 25Vrms
Appendix C
SP4-TZC to SP40/2 with One SP4-APS and
One Audio Booster with Multiple SP4-APS Splitters
This drawing is for illustrative purposes only.
Wire colors are for ease of reading only.