What is the difference in audio power?

The difference in audio power is: 1. There is a difference in sound. Power determines the maximum sound intensity that the speaker can emit. In terms of perception, it is how shocking the sound emitted by the speaker can be; 2. Consumption There is a difference in electricity, the higher the power, the more electricity is consumed per hour.

The difference in sound power is:

1. The sound is different:

Power determines the maximum sound intensity that the speaker can emit. In terms of perception, it is how shocking the sound emitted by the speaker can be. The higher the power, the more powerful the sound the speaker can provide.

2. There are differences in power consumption:

The greater the power, the more power is consumed per hour. Therefore, the power of the speaker is an important reference data. It is recommended to consider the choice carefully. Moderate speaker power.

Extended information:

Performance indicators of the speaker:

The main performance indicators of the speaker are: sensitivity, Frequency response, rated power, rated impedance, directivity, distortion and other parameters.

1. Rated power

(1) The power of the speaker is divided into nominal power and maximum power. Nominal power refers to rated power and undistorted power. It refers to the maximum input power allowed by the speaker within the rated non-distortion range. The power marked on the speaker's trademark and technical manual is the power value.

(2) Maximum power refers to the peak power that the speaker can withstand at a certain moment. In order to ensure the reliability of the speaker operation, the maximum power of the speaker is required to be 2 to 3 times the nominal power.

2. Rated impedance

The impedance of a speaker is generally related to frequency. The rated impedance refers to the impedance measured from the speaker input when the audio frequency is 400Hz. It is generally 1.2~1.5 times the DC resistance of the voice coil. Generally, the common impedances of moving coil speakers are 4Ω, 8Ω, 16Ω, 32Ω, etc.

3. Frequency response

(1) When audio signals with the same voltage but different frequencies are applied to a speaker, the sound pressure generated will change. Generally, the sound pressure produced at mid-range audio frequency is larger, while the sound pressure produced at low audio frequency and high audio frequency is smaller. When the sound pressure drops to a certain value in the mid-range audio range, the high and low frequency ranges are called the frequency response characteristics of the speaker.

(2) The ideal speaker frequency characteristic should be 20~20KHz, so that all audio can be reproduced evenly, but this is impossible. Each speaker can only reproduce a certain part of the audio well.

4. Distortion

(1) The phenomenon that the speaker cannot reproduce the original sound realistically is called distortion. There are two types of distortion: frequency distortion and nonlinear distortion. Frequency distortion is caused by the strong playback of signals at certain frequencies and weak playback of signals at other frequencies. The distortion destroys the original ratio of high and low loudness and changes the original sound.

(2) Non-linear distortion is caused by the vibration of the speaker vibration system and the fluctuation of the signal not being completely consistent, adding a new frequency component to the output sound wave.

5. Directional characteristics

is used to characterize the sound pressure distribution characteristics of the speaker radiating in all directions of space. The higher the frequency, the narrower the directivity, and the larger the paper cone, the stronger the directivity.

The above is the detailed content of What is the difference in audio power?. For more information, please follow other related articles on the PHP Chinese website!