Using this Tannoy loudspeaker is easy. Just connect it to your audio source, like a stereo or amplifier, following the standard connection steps. When using it, make sure the audio source volume is adjusted moderately to avoid over - driving the speaker. As for maintenance, keep it in a dry place to prevent further rust on the grille. You can gently clean the grille with a dry cloth regularly. Also, avoid exposing it to extreme temperatures or humidity. If you notice any abnormal sounds or further deterioration of the grille rust, it might be time to consult a professional.