China Wholesale Audio Pro Speaker Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie

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We pursue the administration tenet of "Quality is exceptional, Provider is supreme, Name is first", and will sincerely create and share success with all clientele for Compact 4 Channel Amp, Amplifier For Speakers And Subwoofer, Wholesale Speaker, With a fast development and our customers come from Europe, United States, Africa and all over the world. Welcome to visit our factory and welcome your order, for further inquires please do not hesitate to contact us!
China Wholesale Audio Pro Speaker Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie Detail:

System indicators

Radio frequency range: 645.05-695.05MHz (A channel: 645-665, B channel: 665-695)

Usable bandwidth: 30MHz per channel (60MHz in total)

Modulation method: FM frequency modulation Channel number: infrared automatic frequency matching 200 channels

Operating temperature: minus 18 degrees Celsius to 50 degrees Celsius

Squelch method: automatic noise detection and digital ID code squelch

Offset: 45KHz

Dynamic range: >110dB

Audio response: 60Hz-18KHz

Comprehensive signal-to-noise ratio: >105dB

Comprehensive distortion: <0.5%

Receiver indicators:

Receiving mode: double-conversion superheterodyne, dual-tuning true diversity reception

Oscillation mode: PLL phase locked loop

Intermediate frequency: the first intermediate frequency: 110MHz,

The second intermediate frequency: 10.7MHz

Antenna interface: TNC seat

Display mode: LCD

Sensitivity: -100dBm (40dB S/N)

Spurious suppression: >80dB

Audio output:

Unbalanced: +4dB(1.25V)/5KΩ

Balance: +10dB(1.5V)/600Ω

Power supply voltage: DC12V

Power supply current: 450mA

Transmitter indicators: (908 launch)

Oscillation mode: PLL phase locked loop

Output power: 3dBm-10dBm (LO/HI conversion)

Batteries: 2x“1.5V No. 5”batteries

Current: <100mA(HF), <80mA(LF)

Use time (alkaline battery): about 8 hours at high power

Simple malfunction treatment

malfunction symptoms

Malfunction cause

No indication on receiver and transmitter

No power on transmitter, receiver power is not connected properly

The receiver has no RF signal

The receiver and transmitter frequency bands are different or out of the acceptable range

There is radio frequency signal, but no audio signal

The transmitter microphone is not connected or the receiver squelch is too deep

Sound guidance circuit malfunction

Setting silent mode

Audio signal background noise is too large

Transmit modulation frequency deviation is too small, receive output electrical Level is low, Or there is an interference signal

Audio signal distortion

Transmitter modulation frequency deviation is too large, receiver output electrical Level is too large

The use distance is short, the signal is unstable

The transmitter setting power is low, and the receiver squelch is too deep.

Improper setting of receiver antenna and strong battery interference around.


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China Wholesale Audio Pro Speaker Factories –  Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie detail pictures


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We believe in: Innovation is our soul and spirit. Quality is our life. Customer need is our God for China Wholesale Audio Pro Speaker Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie , The product will supply to all over the world, such as: Pakistan, Hungary, Greece, We're your reliable partner in the international markets of our products and solutions. We focus on providing service for our clients as a key element in strengthening our long-term relationships. The continual availability of high grade solutions in combination with our excellent pre- and after-sales service ensures strong competitiveness in an increasingly globalized market. We're willing to cooperate with business friends from at home and abroad, to create a great future. Welcome to Visit our factory. Looking forward to have win-win cooperation with you.
  • The product classification is very detailed that can be very accurate to meet our demand, a professional wholesaler.
    5 Stars By Marcy Real from Vietnam - 2018.06.09 12:42
    Wide range, good quality, reasonable prices and good service, advanced equipment, excellent talents and continuously strengthened technology forces,a nice business partner.
    5 Stars By Elva from Cambodia - 2018.10.09 19:07
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