Kalvoj: IP42 v nezapojenom stave (http://www.neutrik.com/jp/en/audio/210_t2_1124754771/SCDX_detail.aspx) - prach zrno nad 1mm, lahky dazd s vetrom (http://www.ezscreen.com/ip_ratings.htm,http://en.wikipedia.org/wiki/IP_Code)