Which wire on the coaxial speaker is positive?
2 Answers
Generally, the red wire is the live wire, which is the positive pole. If you can't tell, you can gently scrape it against the car frame—the one that sparks is the positive pole. Definition of coaxial speaker: A coaxial speaker combines both high and low frequencies in one unit, essentially replacing two speakers. It features two speakers mounted on the same axis, one handling high frequencies and the other mid-low frequencies. The diaphragms of these two speakers are also aligned, and since their physical positioning approximates a point source, the soundstage reproduction is ideal. Characteristics of coaxial speakers: In terms of performance, coaxial speakers deliver high phase fidelity in sound radiation, achieving true point-source reproduction (as sound naturally occurs in point-source form in nature). In terms of listening experience, coaxial speakers provide accurate sound imaging, high musical resolution, and an expansive soundstage. The bass is realistic, powerful, and energetic; the midrange is rich and sweet for vocals; and the treble is crystal-clear, delicate, and ethereal.
Distinguishing the positive and negative wires on coaxial speakers is actually quite particular. I've modified several cars myself, and the positive wire on the speaker is usually marked red or with a plus sign, while the negative is black or with a minus sign. But if the markings aren't clear, don't worry—I have a simple method: take a small 1.5V battery, like an AA type, connect one speaker wire to the battery's positive terminal and the other to the negative. If the speaker diaphragm bulges outward, you've connected the positive wire; if it caves inward, it's the negative. Why bother distinguishing? Because reversing the polarity affects the sound phase, causing left and right channels to be out of sync, resulting in muffled or distorted sound. When working on cars, I always remind myself to disconnect the power first to avoid short circuits. Once, I forgot and blew a small fuse—since then, I've learned my lesson. Developing good habits saves a lot of trouble.
