The purchase of power amplifier skills

Release Date:

2021-07-19

When choosing a power amplifier, we should first pay attention to some of its technical indicators:

1. Input impedance: usually indicates the size of the anti-interference ability of the power amplifier, which is generally 5000-15000Ω. The larger the value, the stronger the anti-interference ability;

Distortion: refers to the degree of distortion of the output signal compared with the input signal, the smaller the value, the better the quality, generally below 0.05%;

Signal-to-noise ratio: refers to the ratio between the music signal and the noise signal in the output signal. The larger the value, the cleaner the sound. In addition, when purchasing a power amplifier, it is necessary to make clear the purchase intention. If you want to install a subwoofer, it is best to purchase a 5-channel power amplifier. Usually, 2-channel and 4-channel speakers can only push the front and rear speakers, while the subwoofer can only be equipped with another power amplifier. The 5-channel power amplifier can solve this problem. The output power of the power amplifier should also be greater than the rated power of the speaker as much as possible.

Keywords:

Power Amplifier, Speaker, Amplifier