Connect your audio input to the EP2500 "Channel 1" input only, with an XLR connector or 1/4-inch phone plug cable. Do not simultaneously use both. Connect a speaker that has suitable power handling capability to the "Channel 1" output with a Speakon connector. If you connect the speaker with bare wire or banana plug, use the two red posts in the middle of the four-post column.
Adjust the "Mode" switches on the rear panel to enable bridged operation. Set switches "6" and "7" to the "Bridge Mode On." position. If you are using limiting or low-frequency cutting, use switches "1" to "3" as needed. Input "2" switches have no effect in bridged mode.
Turn the gain control for "Channel 2" fully counterclockwise to prevent internal phase cancellation problems. Power on your audio source, then the EP2500, and set the output level with the gain control for "Channel 1" on the front panel.