The right tool
Maintenance of speakers requires the use of multimeter and other tools to measure the on-off of wires.
Correct wiring
The red and black in USB plug are the positive and negative poles of 5V power supply, and the red and black lines of speaker are defined as 5V power supply and negative pole with USB plug. Correct wiring can avoid burning out the equipment.
Correct recognition of vocal tract
The white, green and yellow of stereo plug should be left and right channel wires and ground wires. Correctly identifying channels can avoid wrong wiring.
Connect the speakers correctly.
The plug and two speakers connect the white ground wire together. The green line of the plug is connected to the last line of one speaker, and the yellow line is connected to another speaker. Correctly connecting the speaker can ensure the speaker to sound normally.