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LED Outdoor Flood light.IP67 Flood light,waterproof Flood light. SHENGYA LIGHTING TECHNOLOGY CO., LTD. , https://www.syalighting.com When it comes to the power matching problem of speakers and amplifiers, we have to have a correct understanding of the speaker power. Many people have a lot of misunderstandings about this problem. Generally, the power of the speaker is mixed with the power concept of the appliance. .
We know that a water heater with a nominal power of 1000W needs to supply 1000W of power to the power supply when it is working. Otherwise, it will not work properly, such as not reaching the hot water temperature we need or causing the power system. Damage, that is to say, a nominal 1000W water heater in order to make it work properly, to heat the water to the temperature we need, it must give it 1000W of electric power, it needs to consume so much electric power.
But the concept of speaker power is not the case at all. When the speaker works, the output is sound, and the sound is not constant in size. It will swell and the sound pressure will change, but the ratio should not change. Assume that a 100W speaker The concept of this power is that it can withstand 100W of power, instead of the power required by the electric water heater, the 100W power speaker gives it 10W power, it outputs the sound pressure corresponding to 10W power, give it 100W power, it will The sound pressure corresponding to 100W power is output, and the output sound pressure is changed, but in theory, the composition of the sound does not change. China Home Theater Network
Of course, our feelings will change. Because the human ear has a non-linear loudness characteristic, the sensitivity to different frequencies is different under different sound pressures. When the sound is small, the sensitivity to bass and treble, especially the bass, is higher. The midrange is low, so many people think that the power is small, the sound can't come out, and, when you see a speaker with a large nominal power, you think that you need a big power amplifier to push, or you think it is better than a speaker with a small power. power.
To make a metaphor, the speaker A power (withstand) is 100W, the speaker B power is 200W, the sensitivity is the same, the frequency response is the same, in theory, when they are loaded with 10W power, they output the same sound pressure, the sound is the same, two The performance of the box is basically no difference, then it is loaded with 100W power, the sound pressure of the output is the same, the sound is similar, but in fact, the sound of the speaker B will be better than A, because it is not yet At full load, the work is very easy, and A is fully loaded, the distortion has begun to increase, when we further increase its power, B can still work normally, the output sound pressure increases with the increase of the load power, and A Can not stand, the sound distortion is further increased, has become more and more ugly, and then, it may damage the speaker.
The definition of power, we pay attention to the fact that there is a lot of standard for the nominal power of a speaker. For a model of a speaker, the manufacturer will often list the numbers under different standards. This number can be more than doubled, which will make many people Confused, but it is also said that the speaker power is not a fixed number, but the nominal power of a water heater is very clear and single, one represents how much it can "bear", and the other is how much it "needs" , are two completely different concepts, but many people mix them together.
To sum up, a speaker does not necessarily need to use the power amplifier corresponding to its power to work with it, but the larger the amplifier, the more the potential of the speaker can be played out. At present, the power of the speaker is getting bigger and bigger. The speaker with more than 2000W is not a strange thing, but the power of the amplifier is not so easy to go up. Therefore, in the actual system configuration, the power of the speaker is greater than the power of the amplifier is not equal to the power amplifier. Do not move the speaker. The power of the speaker is directly related to its output sound pressure, and there is no direct relationship with the sound. Therefore, some speakers are expensive, but the sound is not necessarily good. It may use "expensive" for boosting power. Most of them appear in the general professional sound reinforcement system, but also use "expensive" in the sound, but the power is not high, such as the studio monitor box, and some, is the "super expensive" speaker, which is a few words. The 5-digit price is that the sound is good and the power is big.
Therefore, when we judge whether a speaker is good or bad, we should learn to understand the relationship between power, sound and price. Usually, at the time of design, the lower limit of the low frequency of the speaker can be increased, the power of the speaker can be relatively increased, and the sound pressure of the output can be improved. In the case of loud sound pressure, due to the loudness characteristics of the human ear, the characteristics of the low frequency of the speaker are compensated for. The speaker that has not been compromised by design may have a relatively good low-frequency response. It can give a good bass when the volume is not large. The sound seems to be easy to come out, "do not eat power", but usually this kind of " The power of the speaker that does not eat power is not large, and the output sound pressure is not high. In reality, the bass performance of a pair of 8-inch KTV speakers is generally much better than a 12-inch professional speaker, which will also give a The illusion, the high-power box is very "eat power", there is no big power to push it out of the bass, this is a design problem, and there is no necessary relationship with power.
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