3
Remote Control Switchers
SR21
Refer to the RC68+ instruc-
tions for code group set-
ting procedures.
INSTALLATION
Fig. 3 is a simple installation
where the amplifier speaker
outputs of an AM/FM receiver
are switched, by IR control,
between the speakers in a
main room and those in a
remote room.
• This system allows speak-
ers to play in the main room
or the remote room, de-
pending on the IR remote
command sent to the SR21.
They can not play simul-
taneously!
• A 780-80 provides IR control from the Remote Room. It includes a STATUS LED indicator that can be
driven by a +12V System Status (ON/OFF) source, such as an adapter plugged into the Switched AC
outlet on the AM/FM receiver.
• IR control in the Main Room is provided with a 490-30 Micro Link IR Receiver as shown (other Xantech
models could also be used).
• The 781C-00 powers the IR receivers as well as the SR21 through the 789-44 Connecting Block.
• In this type of system, you would "teach" either the Pair or the Toggle commands from the RC68 into a
learning remote to operate the SR21 (along with your other system commands).
Fig. 4 is a basic system where the speaker outputs of
two AM/FM receivers are made available, via A/B
switching, to a stereo pair of speakers in a remote
room.
• This system is a relatively
low cost means of provid-
ing two different sources to
a remote room.
• IR control in each room and
power supply consider-
ations are the same as de-
scribed for Fig. 3.
• To simplify the illustration,
other possible system com-
ponents are not shown in
Fig. 4.
• Again, you would "teach"
either the Pair or the Toggle
commands from the RC68+ into a learning remote to operate the SR21 (along with your other system
commands).
IR CONFIRM
L+ L– R– R+
L+
L–
R–
R+
CODE
SUB-
GROUP
SR21
SPEAKER RELAY
MODULE
OFF = A
ON = B
R+ R– L– L+
0 1
2
3
4
5
6
7
A
B
IR IN
CI
GND
+12VDC
789-44
Connecting Block
SR21
Speaker Relay Module
4-Conductor Inter-room
Cable (unshielded OK)
REMOTE ROOM
MAIN ROOM
283M
Blink IR™
Mouse Emitter
Cassette DecK
283M
Blink IR™
283M
Blink IR™
R
L
+
–
+
–
780-80
"J" Box
IR Receiver
+
–
+
–
Left
Speaker
Right
Speaker
490-30
Micro Link™
IR Receiver
(For Main
Room
IR Control)
GND
IR OUT
+12V
STATUS
(To +12V System Status
Voltage, if desired).
To 120 V AC
(unswitched)
782-00
Power
Supply
PWR
+12VDC
GND
STATUS
SIGNAL
EMITTERS
IR
RCVR
789-44
CONNECTING BLOCK
®
AM/FM Receiver
CD Changer
Fig. 3
Main/Remote Speaker
Switching Using an SR21
IR CONFIRM
L+ L– R– R+
L+
L–
R–
R+
CODE
SUB-
GROUP
SR21
SPEAKER RELAY
MODULE
OFF = A
ON = B
R+ R– L– L+
0 1
2
3
4
5
6
7
A
B
IR IN
CI
GND
+12VDC
REMOTE ROOM
MAIN ROOM
789-44
Connecting Block
SR21
Speaker
Relay Module
4-Conductor Inter-room
Cable (Unshielded OK)
R
L
+
–
+
–
780-80
"J" Box
IR Receiver
490-30
Micro Link™
IR Receiver
(For Main
Room
IR Control)
GND
IR OUT
+12V
STATUS
AM/FM Receiver #2
AM/FM Receiver #1
To Emitters on Other
Controlled Equipment
(To +12V System
Status Voltage, if desired).
To 120 V AC
(unswitched)
782-00
Power
Supply
PWR
+12VDC
GND
STATUS
SIGNAL
EMITTERS
IR
RCVR
789-44
CONNECTING BLOCK
®
Fig. 4
Amplifier A/B Switching Using an SR21
