Using these d&b audiotechnik Ci90 speakers is easy. Just connect them to your audio source. When setting them up, place them in a well - ventilated area for better sound dispersion. Be careful as the grille foam is missing, so try to avoid getting dust or debris inside the speakers. For maintenance, you can gently clean the outer surface with a dry cloth. Check the connections regularly to make sure they are secure. Don't expose the speakers to extreme temperatures or humidity, as this can damage the internal components.
