8
Outputs
The PLX 1104 and PLX 1804 models are equipped with Speakon output 
connectors for each channel. PLX 1802, PLX 2502, PLX 3102, and PLX 3602 
models are equipped with Speakon and binding post output connectors.
Wiring connections are shown on the back of the chassis. Carefully note 
the markings and maintain consistent loudspeaker polarity for optimum 
system performance.
Speakon Output Connectors
If making Speakon cables, be sure to connect the loudspeaker wiring as 
shown on the chassis. Channel 1’s Speakon provides 4-wire (Ch 1 + Ch 2) 
connection; Channel 2’s Speakon provides 2-wire (Ch 2 only) connection. 
Appendix A provides Speakon connection reference.
Stereo and Parallel Mode: Connect each loudspeaker to its own chan-
nel of the amplifier, as shown on the chassis label. The INPUT CONFIGU-
RATION switch must be set for STEREO or PARALLEL mode.
Bridge Mode (PLX1802/2502/3102/3602 models only): Use Channel 1’s 
Speakon for Bridge mode output connection. Bridge mode configures the 
channel pair to drive a single high-power loudspeaker load. The INPUT 
CONFIGURATION switch must be set for BRIDGE mode. Use only Channel 
1’s input and Gain control. Set Channel 2’s Gain control at minimum.
PLX 1802, PLX 2502, PLX 3102, and PLX 3602 
Output Connectors: Do not use less than 2 ohm 
impedance loads with these models.
PLX 1104 and PLX 1804 Output Connectors: Do 
not use less than 4 ohm impedance loads 
with PLX 1104 and PLX 1804 models.
Binding Post Connectors (PLX 1802/2502/3102/3602 
models only)
Stereo and Parallel Mode: Connect each loudspeaker to its own 
channel of the amplifier, as shown on the chassis label. The INPUT 
CONFIGURATION switch must be set for STEREO or PARALLEL 
mode.
Bridge Mode: Bridge mode configures the channel pair to drive a 
single high-power loudspeaker load. The INPUT CONFIGURATION 
switch must be set for BRIDGE mode. Use only Channel 1’s input 
and Gain control. Set Channel 2’s Gain control at minimum.
OUTPUT TERMINAL SAFETY WARNING! Do not touch 
output terminals while amplifier power is on. Make all 
connections with amplifier turned off. Risk of hazard-
ous energy!