Lab.gruppen PLM series Operation Manual page 74

10. Back Panel Interface
Pin NL4 #1 Chs.
No. 1 & 2
1+ channel 1 o/p +
1- channel 1 o/p -
2+ channel 2 o/p +
2- channel 2 o/p -
3+
3-
4+
4-
Table 10.3.1a: 4-channel Speakon wiring and pin out
1+ 4-
1+
1-
1-
2+
2+
2-
3+
3-
4+
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.
74
PLM Series Operation Manual rev 1.1.3
NL8 NL4 #2 Chs.
Chs. 1 - 4 3 & 4
channel 1 o/p + channel 3 o/p +
channel 1 o/p - channel 3 o/p -
channel 2 o/p + channel 4 o/p +
channel 2 o/p - channel 4 o/p -
channel 3 o/p +
channel 3 o/p -
channel 4 o/p +
channel 4 o/p -
NL4
PLM Output
Channels 1 & 2
4+
3-
3+
2-
NL8
PLM Output
Channels 1 - 4
NL4
PLM Output
Channels 3 & 4
Pin
No.
1+
1-
2+
2-
Table 10.3.1b: 2-channel Speakon
NL4
PLM Output
Channels 1 & 2
NL4
PLM Output
Channels 2 & 1
Figure 10.3.1d: Speakon NL4/NL8
wiring and output configuration
NL4 #1 Chs. NL4 #2 Chs.
1 & 2 2 & 1
Ch. 1 o/p + Ch. 2 o/p +
Ch. 1 o/p - Ch. 2 o/p -
Ch. 2 o/p + Ch. 1 o/p +
Ch. 2 o/p - Ch. 1 o/p -
wiring and pin out