A loudspeaker transfers electrical signals by movements of a diaphragm in the form of waves to the molecules in the surrounding air. A driver is responsible for this function. By the oscillations of the molecules the electrical signals can be perceived by human hearing. The shape of the housing of a horn loudspeaker differs not only optically of conventional closed or open loundspeaker-variants, it releases the sound-energy target-oriented.

By bundling the waves in exponentially shaped sound channel (the horn corpus), a horn loudspeaker has an outstanding efficiency. This geometrical outline of the horn corpus increases the efficiency of the drivers, so that more than 100 dB/W/m can be reached. Due to such a low-loss release of the sound the drivers can work without large diaphragm movements, which leads to a particularly distortion-free music rendition. Also speed and dynamics are characteristics, which result from the renouncement on long stroke ways of the diaphragm.

The directive effect is design conditionally more strongly pronounced with horn loudspeakers than with normal loudspeakers. The careful adjustment of a horn loudspeaker to the room-conditions is necessary but proves in many cases as favourable.