Using the Electro - Voice (EV) XW15 stage monitor is easy. First, connect it to your audio source properly. Make sure the cables are well - plugged in. When using it on stage, place it in a position where it can best project the sound to the performers. As for maintenance, keep it in a dry and clean place. Regularly check the cables for any signs of wear and tear. Avoid exposing it to extreme temperatures or moisture. If you notice any issues with the sound quality, check the connections and the audio settings on your source device.