Lowell SM820A-BR
Lowell SM820A-BR

Lowell SM820A-BR

Lowell SM820A-BR
Item# SM820A-BR

Product Description


SM820A-BR: Sound Masking Speaker


Above ceiling sm speaker with bridge rails (factory mounted), 8 in. 50W coaxial driver, 70V transformer, grille and backbox. Black finish. NOTE:  Models with factory-mounted rails are made to order and not returnable.



  • Driver:  8 in. 50W coaxial driver (20 oz. magnet)
  • Transformer:  70V (0.25, 0.5, 1, 2, 4W). Selector switch includes "OFF" position
  • Enclosure:  760 cu in. volume (11.625 in. square x 5.625 in. deep), fiberglass lining, externally accessible input leads, SG handibox cover with knockouts, Romex connector for installations without conduit. Black.
  • Grille:  Steel grille with round perforation pattern. Black.
  • Mounting Aids:  Factory-mounted bridge rails (offset)


  • UL 1480  General Signaling U.S.A.
  • UL 2043 Return air plenum space
  • CSAC22.2 No.205-M1983 General Signaling Canada
  • Made in the U.S.A. with global components
  • Certified U.S. steel


  • The sound masking speaker assembly for suspended ceiling installations shall be Lowell Model SM820A-BR, which shall include an 8 in. 50W coaxial driver with factory-wired transformer mounted in a 760 cu.in. steel backbox with grille and externally accessible speaker leads. The wired transformer shall be 70V with primary taps at 4, 2, 1, .5, and .25 watts. The assembly shall include an externally accessible rotary switch to adjust tap selections and include an "OFF" position. Speaker leads shall exit the backbox through a strain relief clamp on a single gang handibox cover. Backbox and grille shall have a black finish and include factory mounted bridge rails.

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