The Extron SM 3 SpeedMount® Surface Mount Speaker is a compact full-range speaker with a patented, concealed wall mounting system. The enclosure measures less than 4″ (10.2 cm) deep. The 8 ohm speaker features a 3″ (7.6 cm) full-range driver and tuned bass port, a wide frequency range of 75 Hz to 18 kHz, and a power rating of 15 watts continuous pink noise, 30 watts continuous program capacity. The Extron-exclusive mounting system is designed to accommodate division-of-labor installations and save costs.