Output Connectors - Lab.gruppen PLM series Operation Manual

AES/EBU link
A latching XLR3M connector is fitted adjacent to the AES/EBU input connector. This is paralleled to the input
connector to provide an unprocessed AES/EBU loop-thru to feed further PLMs, or other equipment. An
AES/EBU 110 ohm termination load is enabled by default when the PLM is the last unit connected within an
AES/EBU daisy-chained system. The termination may be disabled, if desired, via the front panel menu and
within the Lake Controller software.

6.2.2 Output connectors

The PLM is available with a choice of connectors for power outputs: binding posts or Neutrik Speakon.
Bridge mode operation: The PLM is capable of
bridge-mode operation; however the present
system management software does not support
this mode and therefore bridged operation is NOT
recommended.
Please contact plmsupport@labgruppen.com for further information on bridge-mode operation.
Binding posts
In this version, the power outputs for loudspeaker connection are available on four separate pairs of fully
enclosed binding posts. (Channel configuration is model dependent)
Speakon connectors
The Speakon connector configuration differs on 2- and 4-channel PLM models. On 4-channel models, the
power outputs are simultaneously available on a single 8-pole Speakon connector, and on two 4-pole
Speakon connectors. The two 4-pole connectors carry the outputs of channels 1 & 2 and 3 & 4 respectively.
On 2-channel PLM models the two power output channels are available simultaneously on two 4-pole
Speakon connectors. Both connectors carry both channels. The second connector offers the channels in
reverse order. The table below shows the proper wiring scheme for these Speakon outputs.
Pin NL4 #1 Chs. NL8 Chs.
No. 1 & 2
1+ Ch. 1 o/p + Ch. 1 o/p +
1- Ch. 1 o/p - Ch. 1 o/p -
2+ Ch. 2 o/p + Ch. 2 o/p +
Ch. 2 o/p - Ch. 2 o/p -
2-
Ch. 3 o/p +
3+
Ch. 3 o/p -
3-
Ch. 4 o/p +
4+
4- Ch. 4 o/p -
Table 6.2.2a Speakon wiring and pinouts for 4-channel PLMs
NL4 #2 Chs.
1 - 4 3 & 4
Ch. 3 o/p +
Ch. 3 o/p -
Ch. 4 o/p +
Ch. 4 o/p -
6. Quick Guide Overview
PLM Series Operation Manual rev 1.1.3
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