<B>A&E SPECIFICATIONS</B>: The sound masking speaker assembly for suspended ceiling installation shall be Lowell Model SM805A, which shall include an 8 in. 12W dual cone driver with 70V factory-wired transformer having primary taps at 4, 2, 1, .5, and .25 watts. The assembly shall be mounted in a 325 cu.in. steel backbox and grille with black finish. The unit shall include an externally accessible rotary switch to adjust tap selections. Speaker leads shall exit the backbox through a strain relief clamp on a single gang handibox cover on rear of backbox. The wire hangers shall be factory-mounted for upward sound dispersion. Suspension mounting shall be accomplished by connecting the wire hangers to S-hooks and chain (provided).