Shenzhen Tendzone Intelligent Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of omnidirectional ceiling microphone in China. Please feel free to wholesale high quality omnidirectional ceiling microphone made in China here from our factory. We also accept customized orders.
Overview
It uses two complementary omnidirectional condenser microphones, which can collect sound comprehensively and have good sound quality . It also has automatic gain control (AGC) and a high degree of balance between near and far voices . It is especially suitable for empty rooms and can effectively eliminate muddy sounds caused by strong echoes. The microphones are treated with moisture-proof technology to extend their lifespan. They are highly sensitive and can pick up audio in an area of up to 70 square meters .
The separate installation method of the cassette holder facilitates installation on the side wall or ceiling . It automatically suppresses high-intensity sounds and reliably protects back-end audio monitoring equipment . The leading level of audio monitoring echo cancellation technology effectively reduces severe echoes in empty rooms.
The patented audio transmission technology of the microphone head for ultra-long lines has an ultra-strong operating temperature range of -25℃ to 75℃.The microphone head has built-in lightning protection, power polarity reversal protection , and an independent power supply module.
Voltage Module
Independent volume adjustment knob; 3-way linear output (2 3.5mm audio output ports; one 2-pin Phoenix terminal); the body has a detachable wall-mounted card
Dual indicator lights: power indicator light; decibel indicator light
- Input voltage: AC220V
- Output voltage: DC12V±5%
- Output current: 100mA
- Output ripple: ≤20mV
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SPECIFICATIONS
Pickup Module
|
Pickup distance |
10 sqm - 70 sqm |
|
Audio transmission distance |
3000m |
|
Sensitivity |
-46dB |
|
Frequency Response |
20Hz ～ 20kHz |
|
Directivity |
Omnidirectional |
|
Signal-to-Noise Ratio |
70dB (1m 40dB sound source), 35dB (10m 40dB sound source) 1KHz at 1 Pa |
|
Dynamic Range |
50dB (1KHz at Max dB SPL) |
|
Maximum sound pressure |
120dB SPL (1KHz,THD 1%) |
|
Output Impedance |
600 ohm unbalanced |
|
Output signal amplitude |
2.5Vpp/-25db |
|
Microphone |
High sensitivity condenser microphone |
|
Number of Microphones |
Dual Microphones |
|
Waterproof properties |
Indoor moisture proof |
|
Scope of application |
Classrooms , reception rooms , meeting rooms |
|
Protection Circuit |
Lightning protection, power polarity reversal protection |
|
Signal Processing |
effectively reduces the 200Hz~300Hz frequency to suppress the echo signal, increases the 100HZ signal to increase the fullness of the sound, increases the 300Hz~3000Hz voice signal frequency band to enhance the brightness of the sound, and suppresses the 5KHz and 10KHz noise frequencies. |
|
Wiring method |
Three core |
|
Transmission Cable |
4 core 0.5mm2 RVVP shielded cable |
|
Supply voltage |
DC 12V |
|
Supply Current |
20 mA |
|
Operating temperature |
-25℃ ～ 70℃ |
|
Color |
White |
|
Shell material |
PVC |
|
Dimensions |
80mm×80mm×26mm |
|
Weight |
114 g |
