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Desktop Speaker Working Principle

Shenzhen LS Technology Co.Ltd | Updated: Jul 21, 2017

There are many types of speakers, but the basic working principle is similar, Desktop Speaker are a kind of electrical signal is converted to sound signal for playback components. Currently the most widely used is the electric speaker, which consists of diaphragm, voice coil, Desktop Speaker permanent magnet, Desktop Speaker bracket and other components.

When the voice coil of the speaker into the audio current after the voice coil in the role of the current will produce alternating magnetic field, the permanent magnet also produces a constant size and direction of the constant magnetic field. Since the size and direction of the magnetic field generated by the voice coil are constantly changing with the change of the audio current, Desktop Speaker the interaction between the two magnetic fields causes the voice coil to move perpendicularly to the direction of the current in the voice coil, and the voice coil and the diaphragm are connected The vibration of the vibrating diaphragm is generated, Desktop Speaker and the vibration of the air is caused by the vibrating diaphragm vibration. Desktop Speaker When the input voice coil current is greater, the greater the force of its magnetic field, vibration diaphragm vibration amplitude is greater, the sound is more loud. The loudspeaker part of the loudspeaker is mainly in the center of the diaphragm, and when the center of the diaphragm is harder, Desktop Speaker the sound effect of the loudspeaker is better. The loudspeaker produces a bass part mainly on the edge of the diaphragm, and if the edge of the diaphragm of the loudspeaker is softer and the cone is larger, the loudspeaker sounds better. In addition, the dome speakers in the market today in the use of a lot of speakers. Desktop Speaker As we all know, the tweeter because of its high frequency of operation, in the playback of the treble when the diaphragm will be permanent magnet in the magnetic field air gap for high-speed movement, so the tweeter speaker diaphragm to the transient high-frequency signal Make a quick response. And can withstand the high-speed movement of the air pressure, Desktop Speaker so the production of materials for the diaphragm requires the quality of light, and to have sufficient strength.

Drive unit commonly known as the speaker, Desktop Speaker in the construction materials used in a few points worthy of special attention, Desktop Speaker electric speaker diaphragm (in the subwoofer diaphragm or sound cone) there are several kinds of paper diaphragm has a long history, whichever quality Light and with the appropriate damping characteristics, to the birds are still a number of famous factories adhere to the use, but the paper diaphragm vulnerable to wet mold or deformation, its surface hardness is low, Desktop Speaker can not produce high radiation velocity. But for the subwoofer sound full of deep, very suitable. Now the paper diaphragm used in the bass and midrange speakers, paper diaphragm tweeter has almost disappeared.

Loudspeaker sound box material is mainly required to have a good damping characteristics, strong and no resonance, the designer in order to achieve this goal, in the past has chosen a wide range of materials, including crushed wood, wood plywood, fiberboard, plastic, Desktop Speaker and even used Artificial marble, Desktop Speaker triad and metal. General sound box with wood plywood or crushed wood pellets, it is easy to cut and manufacture, and now many of the more advanced speakers using medium density fiberboard (MDF), with better characteristics. Celestion pioneered the use of aerospace technology on their SL600 bookcase loudspeakers, made of aluminum in a three-mezzanine structure, like the construction of an airplane floor, with extremely strong and no resonance, Desktop Speaker and that bookcase loudspeakers were very successful. Another innovative sound box structure is B & W Matrix, internal skeleton structure with sound-absorbing latex to get a pure sound quality.

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