Using the Dexibell DX SUBL3 subwoofer is easy. First, connect it to your CLASSICO L3 organ using the LINE XLR - F connector. Make sure to set the power supply according to your local voltage (either 220 - 230v~ - 50/60 Hz or 100 - 115v~ - 50/60 Hz). Adjust the controls like LEVEL, PHASE, GND lift, and HPF to get the best sound. When it comes to safety, always turn off the power before making any connections. For maintenance, keep the subwoofer in a dry place and clean it regularly with a soft cloth. Avoid exposing it to extreme temperatures or humidity.