The quality of speakers mainly depends on: frequency response, signal-to-noise ratio, dynamic range, distortion, transient response, stereo separation, these six items, let me elaborate on the impact of these six items on the speakers.
1. Frequency response
Refers to the frequency range of the speaker device during playback and the change of the amplitude of the sound wave with frequency
The frequency response range of general speakers should be 20HZ～20KHZ (home use)
The frequency response is a range. The lower the lower limit, the better, preferably not higher than 20Hz; the higher the upper limit, the better, preferably not lower than 20kHz. When the lower limit is lower, the upper limit is higher, it means the speaker is of higher grade.
Second, the signal-to-noise ratio
The signal-to-noise ratio is also called the signal-to-noise ratio. Refers to the ratio of signal to noise in an electronic device or electronic system. Simply put, it refers to the ratio of the output signal power of the amplifier to the noise power output at the same time. And this value will not change with other factors
The signal-to-noise ratio of general household speakers is about 70dB and the signal-to-noise ratio of high-fidelity speakers is above 110dB. The higher the signal-to-noise ratio, the higher the grade of the speakers.
Three, dynamic range
The dynamic range is the ratio of the maximum output to the minimum output. Generally, the dynamic range of a speaker system with better performance is above 100 (dB).
Fourth, the degree of distortion
Distortion is to input a signal to the speaker, and the speaker will output a signal. Compared with the input signal of the speaker, how much the output signal of the speaker has changed. The amount of this change is expressed as a percentage, which is the distortion. It shows how well the speaker restores the input signal.
The distortion of general speakers is below 1%, but the distortion of high-fidelity speakers of Gansu Xinjin Technology Trading Co., Ltd. is maintained at 0.01%
Five, transient response
Refers to the change process of the system output from the initial state to the stable state under the action of a certain typical signal input. Transient response is also called dynamic response or transition process or transient response. Good transient response equipment should respond immediately as soon as the signal comes, and stop abruptly as soon as the signal stops.
Sixth, stereo separation
Stereo separation refers to the isolation between the left and right channels in a stereo speaker system. It actually reflects the degree of mutual crosstalk between the left and right channels. If the crosstalk between the two channels is large, the stereoscopic effect of the playback sound will be weakened.
These are some of my own personal experience, I hope it can be helpful to everyone when buying speakers.