What is the difference between the thickness of the copper wire of the woofer and the tweeter coil?

The cable diameter of the tweeter is very thin, such as the 3-inch 20W tweeter, and the voice coil wire diameter is only about about that. Even if it is the wire diameter, the cross-sectional area is about the same, and according to the safe current of 10A per mm, it can pass through about 300mA, assuming the horn impedance.

is 8, which is less than 1W of power. Therefore, the difference between the actual power of the tweeter and the nominal power is huge. The wire diameter of the woofer is much thicker, because the lower the frequency of the audio amplifier, the greater the power, the general voice coil wire diameter is at least, and some are multi-strand winding, such as 2 or 3 strands of wire winding.

The thickness of the copper wire of the woofer and tweeter coil is: the paper cone of the woofer is large, the vibration frequency is lower than that of the tweeter, and the vibration amplitude is large, so the coil diameter is large, the passing current is large, and the wire diameter is also thick. Eight-inch speakers, voice coil diameter is 40-50mm, six-inch speakers, voice coil diameter is 30-40mm.

The vibrating membrane of the tweeter is small, the vibration frequency is much higher than that of the woofer, and the vibration amplitude is small, so the coil diameter is small, the passing current is small, and the wire diameter is also thin. We've done it with a voice coil diameter of 127mm, how big is this speaker!

Voice coil speaker voice coil according to the needs of low, medium and high woofer units are different, the tweeter voice coil is wound with a very thin wire, including copper wire and aluminum wire, aluminum wire weight is lighter, can obtain better transient response, but in terms of bearing capacity and durability is not as good as copper wire, midrange and woofer mostly use copper wire around the voice coil, and copper wire is thicker to withstand high power, some woofers around two to four layers of voice coil to increase bearing capacity, as for the shape of copper wire is also different, such as circular, hexagonal and rectangular cross section, round wire is most commonly used, Hexagonal and rectangular lines can be closely arranged without leaving gaps, which can increase heat dissipation efficiency and correspondingly improve power carrying capacity. In order to improve the heat dissipation efficiency, some speakers use aluminum or kapton voice coil tubes, and the voice coil is fixed on the tube because of better heat dissipation, significantly increasing the bearing capacity, and more and more speakers are using this material recently. Generally, most of the horns are burned on the tweeter, because its voice coil is wound with a thin wire, can not withstand high power, some speakers are equipped with a protective line, when the input current is too high, automatically cut off or reduce the current to prevent the tweeter from being damaged.

The midrange and woofer voice coils are strong and not easy to burn out, but when the input is too strong, it may cause the voice coil to bottom out or skew.

The coil height needs to be determined according to the size of the woofer.

For example, the 12-inch neodymium magnet woofer voice coil winding is about 100 cores.

The woofer is composed of an electromagnet, a coil, and a horn film, which converts the current into a mechanical wave, the principle of physics, when the current passes through the coil to generate an electromagnetic field, the direction of the magnetic field is the right-hand rule. Suppose that the speaker is in C moderation, and the mechanical wave output by the speaker emits a C wavelength. When the electrical coil together with the speaker film emits mechanical waves, the mechanical waves are transmitted to the surrounding air, and the speaker produces sound from this.

However, because the wavelength of mechanical waves that the human ear can hear is limited, the wavelength range is limited, so the general speaker will set the program within this range. Electromagnetic speakers are roughly composed of electromagnetic power systems (including: magnets, voice coils, that is, electrical coils).

Mechanical wave system (including: sound film, that is, horn diaphragm, dust cover, elastic wave), support system (including: basin frame, etc.).

It works the same as above. The energy conversion process is from electrical energy to magnetic energy, and then from magnetic energy to wave energy.

The woofer and the tweeter, the midrange speaker cooperate to form a sound system, emitting a long wave, the wavelength is longer, so that the human ear produces a sense of warmth, a sense of heat, and makes people excited and excited, often used in KTV, bars, stages and other wide entertainment places.