Insert one end of an XLR speaker cable into the "Right Hi Pass Out" port on the Peavey TriFlex amplifier.
Insert the other end of the cable into the input jack of the right powered speaker or the "Right Input" jack of the amplifier (if you are using passive speakers).
Repeat steps 1 and 2 for the "Left Hi Pass Out." Continue to step 4 if you are using passive speakers.
Connect a second set of XLR cables from the left and right output jacks on the amplifier to the input jacks on the left and right speaker.