These d&b audiotechnik speakers are a great choice for audio setups. However, note that the grille foam is missing from both speakers in this pair.

Using these d&b audiotechnik speakers is easy. Just connect them to your audio system according to the standard procedure. When using, place them in a stable position to ensure good sound projection. As for precautions, since the grille foam is missing, be careful not to let dust or small objects get inside the speakers. For maintenance, regularly clean the exterior of the speakers with a soft, dry cloth. If you notice any other issues during use, it's best to consult a professional for help.