Step 2: Mono and Stereo at the same time
My preference is to use the splitter because it gives extra flexibility. If I’m just watching an ordinary DVD then I’ll just use the TV’s built-in speakers and leave the speakers unpowered. But if it’s an action movie with lots of audio effects or a musical I’ll turn on the external speakers.
The first photo shows a gray colored splitter cable plugged into the DVD player’s white (left/mono) audio jack. The white cable from the adapter is plugged into the splitter and the red cable on the adapter is plugged into the red audio output jack (hidden underneath the gray splitter cable in this photo). The speakers are connected to the other end of the adapter. The other half of the splitter sends the left audio channel to the television, along with the existing yellow (video) signal.
Hooking up external speakers to your DVD player has an added bonus; the DVD player can also be used as an audio CD player. Just leave the TV set powered off. Put an audio CD into your DVD player and you can listen to CDs through the stereo speakers.