Pioneer SP-SB23W Andrew Jones Soundbar System Do not install this unit in a poorly ventilated area, or in locations exposed to high humidity or direct sunlight(or strong artificial light). Tuned to 42 Hz (-10 dB), the output level can be conveniently adjusted with a Speaker Bar remote.Four 3 Structured Surface Mid-Woofers for superior mid-range and vocals compared to smaller drivers. Two 1 High Efficiency Soft Dome Tweeter for smooth high frequency reproduction even at high volume levels Wireless Compact subwoofer for deep bass, but small enough to be unobtrusive Bluetooth music Streaming built-in. 2.4 GHz Wireless Subwoofer. Each amplifier produces up to 28 Watts of power for increased audio dynamics Optical (cable included) and analog inputs for connectivity to any TV