To use this Meyer Sound MM-4XP loudspeaker, first connect it to your audio source. Since it doesn't have a power supply, you'll need to use your own suitable power source. When placing it, make sure it's in a stable position and not blocked. As for maintenance, keep it clean by gently wiping it with a dry cloth. Avoid exposing it to extreme temperatures or moisture. If you notice any issues, it's best to consult a professional.