To use this EAW Otto Adaptive Subwoofer, first make sure you have your own power cable. Connect it to a suitable power source. Place the subwoofer in a location where it can evenly distribute sound, like near the front of a room. When using, avoid overloading the power source to prevent any electrical issues. For maintenance, keep the subwoofer clean by gently wiping it with a dry cloth regularly. Don't expose it to excessive moisture or dust. If you notice any strange noises or problems, stop using it immediately and check for any visible damage.