Using the EAW MH660iEx loudspeaker pair is easy. First, find a stable place to set them up, like on speaker stands or a flat surface. Connect the speakers to your audio source, such as a mixer or amplifier, using the appropriate cables. When using, make sure the volume is adjusted gradually to avoid sudden loud noises that might damage your ears or the speakers. As for maintenance, keep the speakers in a dry and clean environment. Wipe them regularly with a soft, dry cloth to remove dust. Don't expose them to extreme temperatures or humidity. If there are any issues, stop using them immediately and consult a professional for repair.