The dry goods are coming, and the truth of the sound from the speaker is here!

2022-01-27


"Speakers" are often referred to as "speakers". At present, human technology needs to convert electricity into sound waves, the most mainstream technology or "electromagnetic" way, the current market speakers are mainly designed and manufactured by electromagnetic principles.

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The entire speaker consists of three main parts: the speaker monomer, the crossover network, and the speaker. The first is a single body, which basically reverses the working principle of the microphone, as an electrical signal input to the coil in the sound field of the magnetic system. The coil changes magnetically in response to the signal, causing the scale to move in the waveform of the sound in a magnetic system. The voice coil again pushes the diaphragm or yin basin of the horn monomer to push the air to produce sound waves, and the sound is emitted.

is really not difficult, but according to the electrical signal should have the waveform, response and other low distortion of the sound is two different things. The audio range is more than 10 octaves from low frequency (20Hz) to high frequency (18kHz), and is structurally limited in volume, enabling a single speaker unit to cover this audio range. But now the full range group technology is developed, and there are already many full range monomers with good performance on the market.

Of course, in order to build a speaker system that can emit large volume and high bandwidth, we need mono channels with various characteristics, such as low frequency domain (below 300Hz), mid frequency domain (300Hz-2500Hz), high frequency domain (above 2500Hz) and treble monomer. Because a large amount of air needs to be pushed at low frequency, the maximum diaphragm/sound field is required. The midrange station needs to push less air, so the sound field and group size are also smaller and lighter. The high range only needs to push the least amount of air, so the treble monomer is also the lightest and smallest diaphragm and body shape.

Basically, the larger the diameter of the monomer/diaphragm, the heavier the mass, the more air that can be pushed, but the greater the inertia, so the lower the reaction speed, suitable for lower frequencies. On the contrary, the smaller the diaphragm diameter of the monomer, the lighter the mass, the faster the reaction speed, and the higher the frequency, but the more limited the amount of air that can be relatively advanced. Therefore, the slightly bulky speakers on the market form a multi-tone circuit, combining multiple monomers and pronunciations.

Of course, in this case, the electrical signal of the amplifier must be distinguished by high and low sound paths or intermediate sound paths, that is, 'frequency division. In general, there are two methods of frequency division for a speaker system. The main method is to use a manual crossover network to divide the amplifier signal into different frequency ranges. Therefore, the speaker is equipped with multiple sound paths, and there are multiple filter networks to form a crossover network, each of which drives a monomer responsible for a different sound range.


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