Polarity Recognition Of Horns

The polarity of the speaker pins is relative, as long as the polarity regulations of each speaker used in the same room are consistent.
When more than one speaker is used, it is necessary to distinguish the polarity of each speaker pin for the following reason: when two speakers are not in series or parallel with the same polarity, the direction of the current flowing through the two speakers is different. One flows from the head of the voice coil and the other flows from the tail of the voice coil. Therefore, when the paper bowl of one speaker vibrates forward, the paper bowl of the other speaker vibrates backward. The vibration phase of the two speaker paper bowls is opposite, and a part of the energy of air vibration is offset. So it is required that when more than one speaker is used in the same room, it should be connected in series or parallel with the same polarity, so that the vibration direction of each speaker's paper bowl is consistent.