Dedicated Rear Sub Connection Method (Theater)

If connecting a REL as a dedicated rear channel sub, connect the black wire of the REL to a ground lug or a chassis screw on the amplifier; connect the yellow wire to the left rear positive speaker terminal; connect the red wire to the right rear positive speaker terminal. 

Note: You connect your left and right main speakers to the same terminals on your receiver or amplifier as the REL high level connection.