The OJB-CBT100LA-1 was developed as a bracket system to allow the JBL CBT-100LA loudspeaker to be easily mounted in a horizontal position, with tilt control, from a pair of vertical threaded rods. It can also be used bolted directly to a ceiling if there is structural blocking behind the ceiling. [break] This speaker rigging or ceiling mounting versatility is valuable in public sector installation environments. The custom design facilitated installation of many units in mass transit stations. This transverse application of a one box line array resulted in high quality audio coverage at an economical price. [break] The adjustment range of the speaker using this bracket system is +5 degrees to -45 degrees. Sold in matching left-right pairs. (H5620) [break] If you`re a user or installer of JBL loudspeakers and you don`t see what you need for your audio rigging, please let us know. We can help! We frequently design and build custom rigging systems. [break] Pro audio rigging design, roof attachment, supplemental structure, sales, support and PE stamped drawings in any US State provided by Polar Focus. Call us today for more information at (413) 586-4444.