Lowell Manufacturing WB4-4A30-T870 Speaker/Grille Assembly, 4" Driver
Speaker/Grille Assembly with 4 inch coaxial driver, 70V transformer and grille. The driver is engineered as a step up in sound quality and performance over standard commercial coaxial drivers, providing very high quality paging and background music reproduction for hotel lobbies, retail stores, transportation terminals and similar venues. Performance General signaling. Driver (4A30) 4" 30W coaxial driver (No. 4A30) 135 degree dispersion for large coverage areas. Driver's capacity to deliver a wide angle of sound distribution at 2kHz with uniform response and clear audibility ensures complete coverage with minimum units. Ten oz. magnet coupled with 1" copper voice coil driving a polypropylene cone with half-roll rubber surround for long cone travel and good edge damping. Post-mounted, liquid-cooled tweeter is a 1" dia. balanced drive dome with first order highpass filter. Frequency response is 70Hz-20kHz (+6dB) and 50Hz-20kHz (+8.8dB) with a crossover at 5kHz. Frame is stamped 20-ga. steel with black enamel paint finish and zinc plated backplate. Transformer (TLM-870) Transformer has primary taps at 8, 4, 2, 1 watt and frequency response of 50Hz-15kHz (+1dB). Line-matching transformer for high quality audio systems and general purpose paging applications where wide frequency response, low insertion loss and high power handling are critical considerations. The TLM series features the industry standard open-housing design and color-coded leads for fast installation. Grille (WB-4) One-piece punched steel grille (WB-4) with white powder epoxy finish has 7.25" dia. and is made to mount to a backbox with four white Phillips-head screws (included). Compliance & Certification Made in U.S.A. with global components Speaker assembly is UL1480 listed for general signaling and UL2043 rated for use in plenum space when used in conjunction with the approved backbox (Lowell Model No. DX104, order separately)