Toa Electronics IR-820SP Y Wide-Dispersion Ceiling Speaker w/IR transceiver, Requires IR-802T and IR microphones

The Infrared Wireless Microphone System using this IR-820SP is a PA system designed for use in the school classrooms assuming that their size is about 10 m. The IR-820SP is a ceiling-mounted powered speaker with the infrared receiver and offers a wide frequency range of high-quality sound output. It features a digital amplifer for the amplification section, and a full-range speaker for the speaker section. Use of the supplied mounting hardware and optional HY-TB1 Tile Bar Bridge permits it to be versatilely mounted to match a wide range of applications and installation locations. This speaker is combined with an infrared wireless microphone and the IR-802T Infrared Wireless Tuner to make up the infrared wireless microphone system. The infrared microphone system eliminates problems with interference or eavesdropping, allowing simultaneous use in adjacent school classrooms.

Built-in infrared receiver and 20 W digital amplifier
Unique wide-dispersion acoustic structure guarantees uniform output over a wide radius
Bass-reflex speaker system achieving a wide frequency range and high power-handling capability
Easy installation with quick, optimally positioned ceiling mounting

Power Source 24 V DC (supplied from IR-802T)
Power Consumption 4.4 W (based on UL standards)
Rated Output 20 W
Frequency Response 100 Hz – 20 kHz (-10 dB) at installation in 1/2 free sound field
(Measured by installing the unit in the center of a ceiling.)
Amplification System Class D
Distortion 5 % or less (rated output)
Speaker Component 12 cm (4.72″) cone-type
Infrared Wireless Receiver
Carrier Frequency Channel A: 3.100 MHz Channel B: 3.350 MHz
Compliance/Certifications UL60065, UL2043
Mounting Hole Ø300 mm (Ø11.81″)
Cable Requirements CAT-5 UTP
Connection Terminal RJ-45
LED Indicator Power (green) x 1
Operating Temperature -10 °C to +50 °C (14 °F to 122 °F)
Operating Humidity 90 %RH or less (no condensation)
Finish Enclosure: Steel plate, plating
Baffle: Fire-resistant ABS resin (resin material grade: UL94V-0), white
Punched net: Steel plate, white
Filter section: Polycarbonate, optical cut filter
Dimensions Ø320 x 205 (D) mm (Ø12.6″ x 8.07″)
Weight 3.4 kg (7.5 lb)
Included Accessories Safety wire x 1, Ceiling reinforcement ring x 1, Trim ring x 1, Paper pattern x 1
Optional Accessories Tile bar bridge: HY-TB1