To connect a laptop to a DJ mixer and then to speakers, it is necessary to daisy-chain the connectors. The sound signal travels from the laptop, through the mixer and out through the speakers.
- Gather all necessary cables
Plug the laptop into a power supply to ensure plenty of battery life. Then, locate a 1/8 inch male-male RCA audio cable. The plug should be on both ends, and an adapter may be necessary for the cord to fit into the mixer. A larger male-male cable will typically connect the mixer to the speakers. Before connecting any cables, inspect them for frays, kinks or bends that could impede signal or pose a fire hazard. Ensure all volumes are at reasonable levels to avoid damaging equipment.
- Connect the laptop to the mixer
Plug the smaller end of the male-male cable into the laptop's headphone jack. Then, plug the other end into the Line In port on the mixer.
- Connect the mixer to the speakers
Plug the speaker cable into the Line Out jack on the mixer. If there are multiple Line In/Out pairs, make sure the cables are going into the same numbers, for example Line 1 In and Line 1 Out.
- Adjust the sound levels
Use the slider bars on the mixer to adjust the levels. The mixer affects sound to the speaker more directly than the laptop.