The Infrared Wireless Microphone System using this IR-802T is a PA system designed for use in the school classrooms assuming that their size is about 10 m × 10 m (30 ft × 30 ft). The IR-802T is a 2-channel Infrared Wireless Tuner employing a fixed frequency system with 3 AUX inputs. It is combined with an infrared wireless microphone and an infrared wireless speaker to make up the infrared wireless microphone system. The infrared wireless microphone system eliminates problems with interference or eavesdropping, allowing simultaneous use in adjacent school classrooms.
Specification
*0 dB = 1 V
Power Source
230 V AC, 50/60 Hz
(supplied AC adapter must be used)
Power Consumption
8 W (based on UL standards)
Max. 40.8 W (rated output at IR-820SP)
50 dB or more, Signal to Noise ratio (40 dBμV input, 1 kHz modulation, ±4.8 kHz deviation)
Signal to Noise Ratio
Tuner: 60 dB or more (60 dBμV input, 1 kHz modulation, ±4.8 kHz deviation,
A-weighted, Equalization: Centered)
AUX: 75 dB or more (A-weighted, Equalization: Centered)
Tone Squelch Frequency
32.768 kHz
Input
AUX PC: line, -10 dB*, 10 kΩ, unbalanced, stereo mini jack (internal mixing)
AUX DVD/TV: line, -10 dB*, 10 kΩ, unbalanced, 2P RCA jack (internal mixing)
AUX MP3: line, -10 dB*, 10 kΩ, unbalanced, stereo mini jack (internal mixing)
Mute: 25 V line signals of telephone paging from a school intercom system
Output
ALD (Assistive Listening Device): line, -10 dB*, 10 kΩ, unbalanced, monaural mini jack
Speaker: RJ45 (dedicated terminal for IR-820SP connection)
Frequency Response
Tuner: 100 Hz - 12 kHz, AUX: 100 Hz - 20 kHz
Equalization
High: ±10 dB at 10 kHz
Mid: ±10 dB at 1.3 kHz
Low: ±10 dB at 100 Hz
