The One Systems SP.PMK is a basic pole mount bracket designed for use with One Systems models ONE.SP6, ONE.SP8, ONE.SP12D and ONE.SP12T loudspeakers.

The SP.PMK is made of structural steel with a dual-layer, zinc-rich powder coating that will provide long useful life and safety. The SP.PMK and its associated speakers should only be used for outdoor installations for inland, non-coastal environments (more than 10 miles / 16 km from oceans).

The SP.PMK may be used on round or square poles. For square / rectangular poles, the minimum flat dimension must be 3.75 inches (95.25 mm) at the speakers mounting height and for round poles, the minimum diameter is 4 inches (101.6 mm) at the speakers mounting height. One Systems cannot imply the suitability of specific diameters or poles. The suitability of each pole must be verified by the pole manufacturer or a structural engineer.

The SP.PMK requires several distinct parts: The SP.PMK bracket kit; the 3 clamping plates that match the size of the U-Bracket included with each ONE.SP speaker; the 304- grade stainless steel screws and washers that are included with each speaker.

To attach the bracket and speaker assembly to the pole, One Systems recommends Band-It stainless steel banding and buckles (not sold by or available through One Systems).

There are three slots in the sides of the SP.PMT bracket. It is recommended that two single-wraps per slot are used to secure the bracket to the mounting pole.

The U-Bracket shipped with each ONE.SP model is used to attach each speaker to the SP.PMK bracket.