The hd 181 loudspeaker is a passive 2-way system equipped with an 8″ woofer / midrange loudspeaker and a horn-loaded 1″ high-frequency driver in the biradial horn. The specially developed loudspeaker components and the careful tuning lead to a high power handling capacity and longevity of the loudspeaker. The natural, unadulterated sound is particularly noticeable in natural instruments and vocals and is pleasant to the listener. It impresses with a sleek noble design in the rounded roadworthy housing, compact dimensions, high load capacity, outstanding dynamics and long range as well as optimal speech intelligibility, without the horn typical sound. Thanks to the biradial horn, the distribution of the highs is more uniform and not only over-emphasized on the axis and strongly sloping outwards. Another special feature is: an elaborate passive crossover allows usage without DSP.