Speaker Output Connections; Speakon ® Output Connectors - Lab.gruppen PLM series Operation Manual

Factory tests indicate that it may be possible to
connect up to 20 PLMs in this way, but the number
achievable in any given situation may be less than
this. See section 12.5 for further information on
interconnecting digital audio equipment.

10.3 Speaker Output Connections

The PLM is available with either 4 mm binding posts or Neutrik Speakon connectors for the outputs.
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.
10.3.1 Speakon output connectors
®
SPEAKER OUTPUTS
1+/- CH 1+/- 1+/- CH 1+/-
CLASS 2 WIRING
2+/- CH 2+/- 2+/- CH 2+/-
Figure 10.3.1a: 4-channel Speakon output field
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.
3+/- CH 3+/- 1+/- CH 3+/-
4+/- CH 4+/- 2+/- CH 4+/-
10. Back Panel Interface
SPEAKER OUTPUTS
1+/- CH 1+/-
CLASS 3 WIRING
2+/- CH 2+/-
Figure 10.3.1b: 2-channel Speakon output field
PLM Series Operation Manual rev 1.1.3
1+/- CH 2+/-
2+/- CH 1+/-
73