How to connect the speaker cable to the computer?

Active speakers and passive speakers:

Computer speakers are mainly divided into two types of speakers, active speakers and passive speakers. The way to distinguish these two speakers is simple. Active speaker is built with a small power amplifier, directly through the speaker line plugged into the computer's microphone interface, and then the power can be connected to work properly. Passive speakers are generally mainly some large speakers or some old speakers, it does not have a power amplifier, so you must first connect the speaker line to the amplifier, and then the line through the amplifier to connect the computer, and finally the other end of the amplifier connected to the electricity, so that the normal work.

One, the active speaker connection computer:

The method of connecting the active speaker to the computer is very simple, you pass a 3.5m a point two audio line, general plug in the computer's headphone output interface, the other side plug in the speaker's red and white interface, connect good power can work, now go to buy some computer-specific speakers can be directly built-in amplifier, Plug and play.

Second, passive speakers connected to the computer:

And our focus is to introduce passive speakers connected to the computer method, may be some lines and interfaces do not match the need to connect by welding. In the electronic market to buy a 3.5-turn 6.5 of the stereo switch, Jack is a 3.5mm plug, the plug line and the speaker line welded. Say the simple point is 6.5 plug to the amplifier on a channel such as AUX DVD and so on. 3.5 plug into the sound card signal output on the OK. But a lot of people on the line welding is not the line, so do not dare to go to welding themselves, first test the speaker two-line polarity, polarity reversed will not sound. With a 5th battery, the speaker's two lines are connected to the battery positive and negative, if the thread can be heard inside the speaker "crackling" sound, then the battery negative connection is the ground, on the contrary should not sound. If it's the left horn, it's the left, and if it's the right horn, it's the right sound channel. But if the digital connection only need a line on the line, one end access to the sound card sdif output to the other end of the SDIF input amplifier on the line the sound quality is better.

The polarity of the test speaker, the stereo plug inside there are three poles, respectively, is the ground and left and right channel, the left side of the speaker's ground unified welding to the plug of the ground wire, the other one to the left line welding. There is also a plug shell that can be screwed up. The welding is good, and then the plug shell cover, and outside to buy ear nose almost.

In fact, the white point, the passive speaker connected to the computer is a power amplifier connected to a computer process