Whether the power amplification sound and small sound power also change

I suggest you replace it with a low-power one, which is too wasteful of electricity, unless your power supply to the power amplifier is a switching power supply, and it is energy-saving. Because the power supply voltage of the 600W power amplifier will be relatively high, about 80 volts, because (the power is equal to the square of the voltage divided by the resistance), now the power is 600W, the load is 8 ohms, the voltage should be at least 70 volts, because there is a tube voltage drop, of course, it depends on its output resistance, the output resistance will be smaller, the power supply voltage will be smaller, the power consumed by the power amplifier itself will be smaller, that is, the efficiency will be higher, that is, for example, when your power amplifier is powered by 80V, The power you use to watch TV is 5W (the power is much greater than the power of the TV's own speaker, because you take the amplifier with the speaker, the speaker of the speaker is relatively large, that is, the speaker is heavier, we all know that the sound is generated by vibration, so drive such a big speaker to move, the required electrical energy can be imagined, and the sound is smaller, the sound is not clear, and the efficiency is very low), the power (sound energy) that produces the sound may not be enough, because the sound is already very large, 5W power consumption on the speaker,So what is the power consumed on the power amplifier,For example, the general speaker is 8 ohms,8 ohms when loaded,5W 8 ohms then the current is nearly a ampere,The voltage drop on the speaker is like this,The rest of the voltage is dropped on the control tube,80 minus 70 volts,70 times equal to 56W to be consumed on your power amplifier radiator,This power has the power of your TV。

The dynamic sound quality will be better if the amplifier gain is turned down, the sound will be more relaxed, the high gain will be more detailed, and the vocals will be more prominent. Gain is the amplification of the circuit itself, and a high gain provides a higher output voltage swing for the same input voltage swing, but the maximum voltage swing is still limited by the supply voltage.

When talking about the sound quality of a certain audio, it is mainly to measure whether the above three aspects of the sound have reached a certain level, that is, whether the pitch relative to a certain frequency or frequency band has a certain intensity, and is within the required frequency range and at the same volume.

Whether the amplitude of each frequency point is uniform, balanced and full, whether the frequency response curve is straight, and whether the pitch of the sound is accurate, which not only truly presents the original face of the frequency or composition of the sound source, but also meets the requirements of frequency distortion and phase shift.

Musical sound quality. The quality of music depends on a variety of factors, such as the characteristics of the sound source, the signal characteristics of the audio equipment, the characteristics of the sound field, the characteristics of the hearing, etc. Therefore, it is difficult to evaluate the sound quality of audio equipment reproduction.

However, it has also been reported that the International Telecommunication Union has recently approved a new measurement method called electronic ear for objective evaluation of sound quality, which can objectively evaluate the sound quality of any audio equipment, and can also be used to detect defects in the first communication voice coding system.

The above content refers to Encyclopedia - Sound Quality.

No, there is no direct relationship between the two. The quality of the sound can not be judged simply from a certain aspect, the size of the speaker and the reasonableness of the cabinet, the speaker material, the component of the splitter, the speaker material, etc., many aspects affect the sound quality.

The best effect can be heard about whether the power match is reasonable:

1. Shouzai Hu Min should first pay attention to the power matching problem. Theoretically, the rated power of the speaker should be equal to the rated output power of the power amplifier, so that the equipment can work normally when conditions permit, you can choose a high-power power amplifier, do not choose a small power. Under normal circumstances, at least the rated output power of the power amplifier should be greater than 2 times the power of the speaker.

2. The second is impedance matching. The output of the amplifier and the input impedance of the speaker should also be the same. Although there is some slight deviation between the two, it will not have a significant impact on the sound quality, but will only have an effect on the output power of the amplifier.

However, it must be reminded that if the input impedance of the speaker is much lower than the output impedance of the power amplifier, the distortion will increase significantly, and the power amplifier will be damaged in serious cases. Therefore, it is better to choose the same two as much as possible.

3. Finally, the damping coefficient matching. The so-called damping is an indicator that measures the internal resistance of the power amplifier output stage to the damping of the speaker. If the damping coefficient is too high, the sound coming out of the speaker will be dry and not mellow; If it is low, it is easy to feel that the sound is sticking together.

Loud sound can be understood as a large sound pressure level, and the most important indicators are power and sensitivity.

The sensitivity is the same, the higher the power, the higher the sound pressure level;

With the same power, the greater the sensitivity, the greater the sound pressure level.

The sound pressure level is also related to the position of the speakers, especially for the high-energy low-frequency parts, the sound pressure level is increased by 6dB against one wall, 12dB by two walls, and 18dB by three walls. It is important to note that for a certain frequency, if the distance between the speaker and the wall is an odd multiple of the quarter-wavelength hail disturbance, the reflected sound from the back wall will cancel out the direct sound.

For what a good speaker:

The higher the power, the higher the sensitivity, the greater the sound pressure level, the larger the unit size, and the higher the ** naturally.

Remember the most useful sentence of Li Split, there are subjective factors in the quality of the voice, it is best to listen carefully in a quiet environment before choosing, and the one that suits you is the best.