Using your Daichi Piezo Horn Tweeter Speaker is easy. First, connect it to your PA system or compatible device as per the instructions. Make sure it's securely mounted using the 100mm diagonal mount. You don't need to worry about a crossover, so that simplifies the setup. When using it, keep the volume within the power limits of 50Wrms and 75Wmax to avoid any damage. As for maintenance, keep the speaker clean by gently wiping it with a dry cloth. Don't expose it to excessive moisture or dust. If you notice any issues, refer to the user manual or contact our customer service. Since we've been in the appliance parts business for over 25 years, we're here to support you.