The LH-15TA is a double re-entrant metal horn with a high efficiency 15W compression driver to achieve clear voice paging and tone signaling in indoor or outdoor applications. The horn is ideal for use where a weather-resistant speaker is specified for public address/signaling applications that require high intelligibility. It operates within a frequency range of 537Hz-4.5kHz (+6dB) with a sensitivity of 112.2dB log average (1W/1M) 24.0dB maximum SPL (calculated based on power rating and measured sensitivity). Horn includes a high quality transformer for use in 25V, 70V or 100V distributed applications (taps are selected with a screwdriver). Tap selector and screw terminal connections are located on rear, in recessed area with integral strain relief and protective plastic cover. Horn mounts using universal, swivel bracket for efficient installation and positioning. Mounting racket base measures 2.875" dia. with three equally spaced holes (.28" dia.). Horn assembly measures 8.94" dia. x 9.38” deep and features all-metal construction with durable beige epoxy finish for long service life.