The LH30TA is a double re-entrant metal horn with a high efficiency 30W 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. Model LH-30TA operates within a frequency range of 411Hz-4.0kHz (+6dB) with a sensitivity of 118.1 log average (1W/1M) 138.8dB maximum SPL (calculated based on power rating and measured sensitivity). Horn includes 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 bracket base measures 2.875" dia. with three equally spaced holes (.28" dia.). Horn assembly measures 10.37” dia x 10.63” deep and features all-metal construction with a durable beige epoxy finish for long service life.