How to pick a computer speaker?

How to choose a computer speaker?

Computer speakers are one of the most important external devices for multimedia computers, especially those "enthusiasts" players are at any price to buy high-quality speakers, how to buy the speaker of the desirable? Its importance indicators are mainly in the following aspects:

Frequency response
The hearing range of ordinary people's ears is the 25hz-20khz sound, therefore, the frequency of the speakers should be at least 45hz-20khz to ensure the basic coverage of the effective hearing range of human ears. Generally speaking, the frequency response of multimedia computer speaker can meet the requirement in 40hz-20khz range.

Harmonic distortion
This is due to the speaker caused by the resonance phenomenon of sound playback distortion, the indicator should be smaller the better.

Sensitivity
The higher the indicator value, the better the performance, the average speaker's spirit per degree generally for 70db-80db.

Output power
Includes nominal power (i.e., continuous output power) and peak power (i.e. maximum output power). Nominal power refers to the speaker harmonic distortion in the standard range of changes, the speaker for a long time to work out the maximum output power, peak power refers to the operating conditions under no overload of the maximum power amplifier. When you choose to pay attention to its labeling is nominal power or peak power.

Appearance selection
Poor quality of the speaker performance in the appearance of work is also poor. Therefore, we must carefully observe whether the box surface bubble, crack, switch operation is convenient and so on.

Pick from the sound effects
This is the key, the emphasis on "listening." The specific listening method is to listen to the current sound, the audio input line unplug, and the volume to the maximum, the human ear from the horn about 20 centimeters should not hear noise, or noise is very weak. Then use your very familiar tune play, listen to the sound, to the bass sink and not muddy, Gao Ying-liang and not sharp, alto alcohol, at this time the volume does not adjust too much, volume does not represent good quality, not by business operations misleading. Also pay attention to the speaker on the adjustment knob in the rotation should not have contact with bad noise.

Finally, it is necessary to explain the speakers on a variety of power wiring, switches, plugs should meet safety requirements
If these accessories are shoddy products, you can imagine the quality of the speaker is not up. In addition, the purchase of the computer speakers should have a magnetic performance, if the speaker performance is not good, there will be a display of magnetization, resulting in a decline in the quality of display.