This design quickly and permanently attaches JBL 8330A and 8340A surround loudspeakers to auditorium walls and offers a full range of pan and tilt rotations. This makes it easy to precisely mount and accurately aim surround speakers in cinema applications. The extended support arm firmly anchors to walls through sound wall and drapery (up to 2.5 inchs/63.5 mm deep) to allow secure and concealed mounting. The 2517s unique support arm also acts as a convenient carrying handle during installation. Once the arm (speaker) has been inserted into place, the mounting plate does the job supporting all the weight leaving the installers hands free to complete the wiring and aiming process.