brand：Study of cable

JF-377 2.4G teaching speaker product features：

   1.2.4G high fidelity perfect sound quality, clear voice, loud.
2.2.4G wireless transmission technology, arbitrary launch can be used with any pair of speakers, multiple sets of equipment without crosstalk.
3 transmitter set mute and volume adjustment function, the switch when there is a prompt tone. The external audio and microphone audio are separately regulated, the microphone is adjusted by the transmitter, and the external audio is regulated by the sound box volume button.
4 two-way microphone input, audio input all the way, all the way recording output, independent volume control knob.
5.GFSK digital modulation / demodulation
6 20Hz ~ 20KHz frequency response
7 90dB audio dynamic range
8 work in the 2.4GHz ISM band, 20 working frequency points
9 -85dBm receiver sensitivity, 45dB adjacent channel rejection, 30dB image rejection
10 effective reception distance of 20 meters
JF-377 paragraph 2.4G teaching speakers illustrate schematic:

 1 according to the above method to connect the speaker system, the main box total volume to minimum power. Main box power indicator light and flash.
2 of the frequency at a distance of 3 meters, the main box, open the transmitter power switch. Transmitter and speaker.
3 after the success of the frequency, adjust the speaker on the high bass knob, to the microphone sounds sound and pleasant.
4 open the computer music and computer volume to the appropriate location. Speaker system can be used normally.
5 again using speaker system does not need to debug speakers, open the microphone to use frequency can be successful, control the microphone volume to avoid the use of near distance, speaker squeak.