In the 10,000-capacity mechatronik arena of the third division SG Sonnenhof Großaspach, only 34x hd 12CXN and one hd DSC5 are used for the sound reinforcement of the entire football arena. Due to the special arrangement of the loudspeakers as a 2-cluster consisting of hd 12CXN, an interference-free radiation behavior of 160° x 80° (hor [...]