China Wholesale Fixed Installation Speaker Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie

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Our eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" as well as the theory of "quality the basic, have confidence in the very first and management the advanced" for Portable Karaoke Mic, Subwoofer Speaker With Amplifier, Box Speaker 6 Inch Line Array, Our hugely specialized process eliminates the component failure and offers our consumers unvarying high quality, allowing us to control cost, plan capacity and maintain consistent on time delivery.
China Wholesale Fixed Installation 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 Fixed Installation Speaker Factories –  Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie detail pictures


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We now have a skilled, performance team to supply good quality services for our consumer. We often follow the tenet of customer-oriented, details-focused for China Wholesale Fixed Installation Speaker Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie , The product will supply to all over the world, such as: Czech Republic, Luxemburg, Adelaide, As a well educated, innovative and energetic staff,we are responsible for all elements of the research, design, manufacturing, sales and distribution. With studying and developing new techniques,we are not only following but also leading the fashion industry. We listen attentively to the feedback from our customers and provide instant communication. You will instantly feel our expertise and attentive service.
  • Good quality, reasonable prices, rich variety and perfect after-sales service, it's nice!
    5 Stars By Ingrid from San Diego - 2017.05.02 11:33
    The accounts manager made a detailed introduction about the product, so that we have a comprehensive understanding of the product, and ultimately we decided to cooperate.
    5 Stars By Betty from Sacramento - 2017.06.22 12:49
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