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Lowell LT-4A-T870-Vb

Lowell LT-4A-T870-Vb

Lowell LT-4A-T870-Vb
Item# LT-4A-T870-VB

Product Description


LT-4A-T870-Vb: Loudspeaker (1×2)

1x2 ceiling speaker - quick install pro speaker for suspended tile ceilings features premium 4 in. coaxial driver, 70V transformer,  fine perforation grille, and .8 cu.ft. enclosure. Patented 1x2 assembly with integral T-bar quickly replaces half a non-tegular (2x2) ceiling tile. U.S. patents 7120269, D467579, 7643647.


  • Pro Sound


  • Driver (4A30):  4 in. 30W coaxial speaker with 10 oz. low frequency and 2 oz. high-frequency magnets. It’s engineered for distributed sound systems requiring a high performance coaxial speaker for even, high-frequency dispersion, low distortion and clear fidelity for foreground music. Speaker features post-mounted dome tweeter, effective crossover and woofer with long excursion, half-roll surround on poly cone. 8 ohm.
  • Transformer:  70V transformer with primary taps at 1, 2, 4, 8W
  • Enclosure (.8 cu.ft.):  Steel backbox with 1.5 in. thick acoustic lining. Removable dual knockout wiring compartment cover plate with combination knockouts. Driver leads exit through metal clamp.
  • Grille with Subplate (1 x 2):  Fine-perforation grille provides maximum free-air space for excellent sound transmission while maintaining an unobtrusive appearance in new or existing tile ceilings. White.
  • Mounting Aids:  Patented integral T-bar to support neighboring non-tegular ceiling tile. Restraint tab and hole for two-cable code compliance (cables not included).


  • Made in the U.S.A. with global components


  • The 1x2 ceiling speaker system for suspended tile ceilings shall be Lowell Model No. LT-4A-T870-Vb. The 1'x2' system shall replace half of a non-tegular 2'x2' ceiling tile or one-fourth of a non-tegular 2'x4' ceiling tile and shall include an integral T-bar to support adjacent ceiling tile. Each speaker system shall include a 1'x2' subplate with fine perforation steel grille finished in white powder epoxy. The driver magnet weight of 10 ozs., frequency response of 71Hz- 20kHz (±6dB) and 50Hz-20kHz (±8.8dB) and average sensitivity of 88.0dB measured 1W/1M. The driver shall include a factory wired 70V transformer with primary taps at 1, 2, 4, and 8W. The system shall also include a 0.8 cu.ft. steel backbox with 1.5" thick fiberglass lining and a black powder epoxy finish. Speaker connections shall exit the .8 cu.ft. backbox through a metal clamp.