It can be buried in the ground in a hole up to 6.5" (165 mm) deep. All connections are made at the end of the cable exiting from the loudspeaker. Connect the designated wires to the cable from your amplifier + and - terminals, then protect the connections with the included wire nuts. Twist the appropriate color wire for your desired tap setting with the tap common wire, then use a wire nut to seal. Cap all unused remaining wires with the included wire nuts. Lay the wire junctions in the ground (the wire nuts have silicone for a seal), or install in a bury-rated junction box.
For surface applications, such as on a deck or patio, place the external cable and wire connections under the loudspeaker or in an external junction box. Secure to the surface with three #10 or M4 mounting screws (not included).