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TOPProductsConference Microphone System IRR-40P Infra red 2CH Wireless Mic receiver

IRR-40P Infra red 2CH Wireless Mic receiver




The New Azden infrared IRR-40P powered, dual-channel receiver allows you to use 2 wireless microphones simultaneously, and you can also adjust system volume right from the IRN-20 pendant style transmitter. 2 wireless microphones can be used for, “team-teaching, or with the mini handheld microphone (IRN-30) for student pass-around. The receiver also has 2 stereo auxiliary inputs so that other line-level devices (CD players, MP3 players, VCRs, etc.) can be attached and played through the system. The teacher can also send the audio to a recorder or video camera, using the line-level output jack. For bigger rooms or odd-shaped rooms up to 3 external sensors can be attached. With all 4 of the ceiling speakers attached to the IRR-40P, sound is spread equally throughout the room, allowing all students to hear equally.


Infrared wireless microphone systems are the best solution for classrooms. In today’s RF saturated world a regular (VHF or UHF) microphone system risks interference from a variety of other devices and sources. Cell phones, radios, TV, PA systems, police and emergency service systems, etc., can all interfere with VHF and UHF, but not with IR. Furthermore, infrared is perfect for classroom audio, since, unlike the other systems, IR is short-range, cannot penetrate walls, and is line-of-sight. This means that a school can have as many classrooms as desired with individual audio systems, without fear of in-terference. Since the Azden system is dual-channel, the teacher can have one micro-phone and a second person can also have a microphone. In addition, since each class-room system is on the same pair of channels, teachers can go from room to room with-out having to switch microphones.


Sub-carrier frequencies 2.06MHz & 2.56MHz
Type Super heterodyne – crystal controlled
Modulation FM
Signal-to-Noise >75dB A weighted
Reception sensitivity >25dBµV
Line Input impedance 32k ohms ±15%
Line Output adjustment – infinity to +10dBu
Audio Output 5W x 4 @ 4 ohms
Power requirement 15V DC @ 2.7A
Dimensions 204(W) x 233(D) x 44(H) mm
8.03 x 9.19 x 1.73 inches
Weight 1.5 kg
3.33 lb

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