Wall/ceiling U-bracket mounting kit provides a cost-effective and safe means of attaching Sx/Sb loudspeaker series to walls or suspending them overhead. The kit contains a large, reinforced-steel bracket with selection of through-holes which allow the bracket to be mounted to different surfaces in range of orientations. This kit is recommended for most installations and is essential when arraying Sx/Sb loudspeakers series. The Mb200 U-bracket extends from top to bottom of the Sx/Sb loudspeaker series and attaches at both ends. This securely captures the enclosure allowing further loudspeaker systems to be added without increasing the stress on the first enclosure. It also allows the loudspeaker to be aimed in the desired direction and locked in place.