Using your Daichi Piezo Horn Tweeter Speaker is easy. First, make sure you place it in a proper location for the best sound projection. Since it doesn't require a crossover, you can directly connect it to your compatible PA system or other devices like IS1200 or IS15 - 150. When handling the speaker, be gentle as it's a delicate audio device. Avoid dropping it or subjecting it to strong impacts. For maintenance, keep it clean by using a soft, dry cloth to wipe the surface regularly. Don't expose it to excessive moisture or extreme temperatures as this can affect its performance. If you're replacing the horn driver for a Motorola KSN1165, follow the standard replacement procedures carefully. With proper use and care, your speaker will provide high - quality sound for a long time.