74
PLM Series Operation Manual rev 1.1.3
10. Back Panel Interface
Pin
No.
NL4 #1 Chs.
1 & 2
NL8
Chs. 1 - 4
NL4 #2 Chs.
3 & 4
1+
channel 1 o/p + channel 1 o/p + channel 3 o/p +
1-
channel 1 o/p -
channel 1 o/p -
channel 3 o/p -
2+
channel 2 o/p + channel 2 o/p + channel 4 o/p +
2-
channel 2 o/p -
channel 2 o/p -
channel 4 o/p -
3+
channel 3 o/p +
3-
channel 3 o/p -
4+
channel 4 o/p +
4-
channel 4 o/p -
Table 10.3.1a: 4-channel Speakon wiring and pin out
Pin
No.
NL4 #1 Chs.
1 & 2
NL4 #2 Chs.
2 & 1
1+
Ch. 1 o/p +
Ch. 2 o/p +
1-
Ch. 1 o/p -
Ch. 2 o/p -
2+
Ch. 2 o/p +
Ch. 1 o/p +
2-
Ch. 2 o/p -
Ch. 1 o/p -
Table 10.3.1b: 2-channel Speakon
wiring and pin out
NL4
PLM Output
Channels 1 & 2
NL4
PLM Output
Channels 2 & 1
Figure 10.3.1d: Speakon NL4/NL8
wiring and output configuration
3+
2-
4+
2+
1-
1+
4-
3-
1+
1-
2+
2-
3+
3-
4+
4-
NL4
PLM Output
Channels 1 & 2
NL4
PLM Output
Channels 3 & 4
NL8
PLM Output
Channels 1 - 4
Figure 10.3.1c: Speakon NL4/NL8
wiring and output configuration
Users will find it convenient to use either the NL4 connectors or the NL8 depending on the installation
situation. Both sets of connectors may be used if desired, with one set being wired to a local connection
panel for test purposes, for example.
When wiring the loudspeaker connections, ensure that all ‘+’ loudspeaker connections are connected to the
pins marked ‘+’, and that all ‘ - ‘ connections to ‘ – ‘ pins.
