Look inside the subwoofer enclosure to find the woofer driver. Notice the black and red wires with terminals at the ends clipped onto the speaker's terminals.

Gently grasp one wire terminal and wiggle it left and right while pulling the terminal away from the speaker.

Remove the other terminal using a similar method. NOTE: Black is usually negative and red positive. However, Klipsch labelled the speaker terminals incorrectly, so the black wire clips on to "+" and the red wire clips on to "-" . Also, on my unit, each wire terminal only fit on the correct speaker terminal and not the other.