Attention! The grille foam is missing from both speakers in this pair of D&B Audiotechnik Ci90 2-Way Full Range Passive Loudspeakers. Despite this, they offer great audio performance.

These D&B Audiotechnik Ci90 loudspeakers are easy to use. Just connect them to your audio source and you're ready to enjoy high - quality sound. When using them, make sure the audio source's power output matches the speakers' requirements to avoid damage. As for maintenance, keep them in a dry and clean place. Although the grille foam is missing, you can consider replacing it if possible to protect the speaker components from dust. Regularly check the connections to ensure a stable audio signal.