PLM Series Operation Manual rev 1.1.310. Back Panel Interface73Factory tests indicate that it may be possible toconnect up to 20 PLMs in this way, but the numberachievable in any given situation may be less thanthis. See section 12.5 for further information oninterconnecting digital audio equipment.10.3 Speaker Output ConnectionsThe PLM is available with either 4 mm binding posts or Neutrik Speakon connectors for the outputs.Please contact plmsupport@labgruppen.com for further information on bridge-mode operation.10.3.1 Speakon ® output connectorsCLASS 2 WIRINGSPEAKER OUTPUTS1+/- CH 1+/-2+/- CH 2+/-1+/- CH 1+/-2+/- CH 2+/-3+/- CH 3+/-4+/- CH 4+/-1+/- CH 3+/-2+/- CH 4+/-Figure 10.3.1a: 4-channel Speakon output field Figure 10.3.1b: 2-channel Speakon output fieldCLASS 3 WIRINGSPEAKER OUTPUTS1+/- CH 1+/-2+/- CH 2+/-1+/- CH 2+/-2+/- CH 1+/-The Speakon connector configuration differs on 2 and 4 channel PLM models. On 4-channel models, thepower outputs are simultaneously available on a single 8-pole Speakon connector, and on two 4-poleSpeakon 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-poleSpeakon connectors. Both connectors carry both channels. The second connector offers the channels inreverse order. The table below shows the proper wiring scheme for these Speakon outputs.The PLM is capable of bridge-mode operation;however, the present system management softwaredoes not support this mode and therefore bridgedoperation is NOT recommended.
