JBL Ceiling Loudspeakers Owner's Manual page 10

Using Loop-Through Terminals (Pins 1 & 4) - - By connecting the wire pair of
the subsequent speaker to pins 1 & 4, then all subsequent speakers will be
disconnected when this speaker's connector is disconnected during for
troubleshooting,. This can be useful as a way to isolate problems to a section of
the distributed line while leaving the wires attached to the connector.
Figure 9:
Using Loop-
Through Terminals
From Amplifier or
Previous Speaker
Figure 10:
Loop-Through
System Hookup
Diagram
+
Power Amplifier
Choose whichever hookup pattern accommodates your installation best.
Step 4 – Plug connector into connector socket in the speaker's terminal cup.
1 2 3 4
+
–
1 2 3 4
–
Speaker 1
–
To Subsequent
Speakers
+
1 2 3 4 1 2 3 4
Speaker 2 Speaker 3
Figure 11:
Plugging Connector Into
Connector Socket
+
To
Subsequent
Speakers
–
9