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) |
|---|---|
| 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 |
|---|---|
| Carrier Frequency | Teacher (Channel A): 3.100 MHz Student (Channel B): 3.350 MHz |
| Reception Angle | 360゜ (Horizontal) |
| Connection Terminal | RJ-45 |
|---|---|
| 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 |
