Using your Mackie Thump 18S subwoofer is easy. First, connect it to a suitable power source using the included correct power supply. Then, link it to your audio system. You can adjust the volume and other settings according to your needs. When using it, make sure the environment is dry and clean to avoid damage. For maintenance, wipe the surface regularly with a soft cloth. Don't expose it to extreme temperatures or moisture. If there are any problems, refer to the user manual or contact customer service.