IR-820SP
This infrared wireless microphone system with the IR-820SP speaker is a PA system designed for use in the school classroom with a size of 10 m × 10 m (30 ft × 30 ft). The IR-820SP is a ceiling-mounted powered speaker with an infrared receiver that offers a wide frequency range with high-quality sound output. It features a digital amplifier 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 allows 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 for simultaneous use in adjacent school classrooms.
Power Source | 24 V DC (supplied from IR-802T) |
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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
Wavelength | 870 nm |
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Carrier Frequency | Teacher (Channel A): 3.100 MHz Student (Channel B): 3.350 MHz |
Reception Angle | 360゜ (Horizontal) |
Connection Terminal | RJ-45 |
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LED Indicator | Power (green) × 1 |
Mounting Hole | φ300 mm (φ11.81") |
Usage Cable | CAT-5 UTP |
Operating Temperature | -10 ℃ to +50 ℃ (14 ゜F to 122 ゜F) |
Operating Humidity | 90 %RH or less (no condensation) |
Finish | Enclosure: Steel plate Baffle: Fire-resistant ABS resin (resin material grade: UL94V-0) Punched net: Steel plate Filter section: Polycarbonate |
Dimensions | φ320 × 205 (D) mm (φ12.6 × 8.07) |
Weight | 3.4 kg (7.5 lb) |
Accessory | Safety wire …1, Ceiling reinforcement ring ...1, Trim Ring ...1, Paper Pattern ...1 |
Option | Tile bar bridge: HY-TB1 |