FAQ What are the typical signal sources for the QW-118P? Typical signal sources include sound reinforcement system mixers, CD players, minidisc players, and tape recorders.How can I troubleshoot lack of output power? Check the power supply, ensure the power LED is on, verify the ON/OFF switch and the IEC power cable, and inspect the fuse.How do I address buzzing or humming sounds from the QW-118P? Try plugging the speaker into a different power outlet, use shielded cables for signal connections, and adjust the ground-lift switches.
