Passive 2-way column array. The specially curved arrangement of the high frequency section results in an asymmetric vertical acoustic beam of nominal 25° (+5°/ -20°). This arrangement allows for long throw distance as well as a perfect nearfield coverage. The ILS 64 is perfect for fullrange applications without compromises to play back music as well as for speech reproduction. The subwoofers IB 210 and IB 15 can be used as low extension of the ILS 64.