TOA IR-820SP Y is a ceiling-mounted powered speaker with an infrared receiver that offers a wide frequency range of high-quality sound output. It is easy to install with the supplied mounting hardware and optional HY-1B1 Tile Bar Bridge. This speaker eliminates problems with interference or eavesdropping, allowing simultaneous use in adjacent school classrooms. The IR-820SP Y has a power consumption of 4.4 W and a rated output of 20 W. It has a frequency response of 100 Hz — 20 kHz (-10 dB) and a distortion of 5% or less (rated output). The speaker component is a 12 cm (4.727) cone-type.