Difference between external magnetic audio speakers and internal magnetic audio speakers

We use the most is the moving coil speakers. Moving coil speakers also have an internal magnetic type and external magnetic type, due to the external magnetic type is cheap, so the general external magnetic type of speakers used more. Internal magnetic leakage is less and relatively low distortion, internal magnetic audio speakers behind the magnet can not be seen, the magnet is wrapped in the shell, generally using two pieces of the same polarity to reduce the magnetic leakage of the paste.

Difference between internal and external magnetic audio speakers:1. Generally the same size of the internal magnetic speaker is higher than the external magnetic speaker, the internal magnetic speaker has less magnetic leakage but the volume of the magnet is limited, the external magnetic speaker has no limitation of the magnet but is easy to leakage.2. The internal magnetic speaker can not be seen at the back of the magnet, the magnet is wrapped in the casing, and two pairs of stickers of exactly the same polarity are generally used to reduce magnetic leakage. The built-in speakers of computer multimedia and TV sets are all internal magnetic speakers.3. A circle of black magnets can be seen behind the external magnetic speakers, and iron can be easily adsorbed by the magnets. Ordinary home stereo combinations are used in external magnetic speakers.4. Internal magnetic speakers, disturbed by the external magnetic field is small, the magnetic circuit is short, the number of ferromagnetic material is small, the quality is light, but it is difficult to form a strong magnetic field, movable coils and the same as the travelling wire in the case of sensitivity is not high.5. External magnetic speakers, the use of ferromagnetic material is large, the weight is large, easy to be affected by the interference of the external magnetic field (but you can add a shielding method to exclude the interference) sensitivity is high. 6. . behind the external magnetic horn can see a circle of black magnet, iron can be easily adsorbed by the magnet. Ordinary household combination of audio are used in the external magnetic horn.

A circle of black magnets can be seen behind the external magnetic speaker, iron can be easily adsorbed by the magnet. Ordinary home stereos use external magnetic speakers. From a physical point of view, the inner magnetic speaker's voice circle is very large, the smallest distortion, the most accurate sound quality, monitor taste. External magnet is a small voice coil, split vibration, distortion is not easy to do small. This is the difference between internal and external magnetic audio speakers.