How to distinguish the positive and negative poles of the horn wire?

Audio speakers have become an inseparable part of people's lives, but how to distinguish the positive and negative poles of the speaker line? Today I will talk about how to distinguish quickly and effectively.

Judging from the dry battery, when the horn paper basin shrinks inward, the horn terminal corresponding to the positive electrode of the battery is the negative electrode; On the contrary, when the horn paper basin extends outward, the horn terminal corresponding to the positive electrode of the battery is the positive electrode.

Judging from the three-way ammeter, when the three-way ammeter is turned to the Om gear, the horn will move when it contacts, and the standard positive electrode will be pushed forward (extended); Behind (inward) is the negative electrode.

Judging from the usual color: the output line of general audio, the same speaker line will be the same color system, such as white, brown and so on. And the main line will be solid color; There will be thin black lines or dotted lines on the negative lines. Therefore, it is easy to judge the positive and negative poles through such thinking.

With a multimeter, aim the knob key at V-Black 50V, ground the black pen as the metal body of the car, touch any wire with the red pen, and move the pointer to the right, indicating that this wire is the positive electrode.

The car audio phaser can directly test the positive and negative poles of the audio. The positive and negative poles of the horn wire can be easily judged by the data displayed in its phase table.

If there are multiple speakers sounding at the same time in a sound field, it is only necessary to unify the input terminals of the speakers in a wiring direction.

If it really won't, then you can only ask professionals to identify it.