Abstract: Speaker mounting systems configured to assembly a line array coupled to a support are provided. The mounting systems generally include an engagement system having a hanger assembly with a boom arm including upper connection points. In a first speaker, the upper connection points can be operably coupled to the support. The line array can include a second speaker having an engagement system including a hanger assembly having a boom arm with upper connection points operably coupled to the lower connection points of the first speaker. The boom arm of the second speaker can be pivotably coupled to the second speaker such that the boom arm is adjustable between at least a first position, corresponding to a first splay angle between front faces of the first and second speakers, and a second position, corresponding to a second splay angle between the front faces of the first and second speakers.

Abstract: A portable reel jack for supporting and lifting large spools of heavy cable, wire and the like includes a hydraulic lift with an extendable piston rod. A stanchion that is pivotally connected to the piston rod carries a spool support and remains vertically oriented during movement of the piston rod relative to the cylinder. Moreover, when the piston rod moves vertically away from the base in a lifting motion, then the stanchion moves laterally away from the hydraulic cylinder. As the spool is being lifted off of the ground by the hydraulic jack, the load-bearing location of the rod that carries the spool moves increasingly farther away from where the operator is standing to operate the lifting action of the portable reel jack. Additionally, the spool support has the flexibility of three different height elevations for carrying the rod on which the spool is in turn carried.