For DVD, the digital output is generally only optical fiber output, and the digital input connected to the power amplifier by optical fiber cable is generally analog connection, so it is enough to connect the speaker cable interface behind the power amplifier. If it is the next era, so much the better, HDMI cable can solve it.

The power amplifier has an output port, usually one black and one red, connected to the speaker. 2.0 There will be two groups of power amplifiers connected to the left and right speakers. A 5. 1 amplifier will have six groups of outlets, which are connected to the front, rear, left and right, medium and subwoofer respectively. There are signs. Connect the corresponding speakers. The red port is best connected to the red port of the speaker, which should be consistent. If a speaker is connected wrong or put in the wrong position, it will completely destroy the stereo effect.