Why horns?

Horns are even more demanding for making than transmission lines, but they offer significant constructional advantages. The cross-section of a transmission line tunnel is equal to or less than the surface of the loudspeaker membrane, whereas the cross-section of a horn tunnel widens towards its exit. Thus, new qualities are gained: 

- the driver velocity is increased – by utilizing the sound pressure principle, the loudspeaker actually rests on an air cushion that is optimally adjusted to the room pressure because it widens towards the exit (the room).
Why velocity is so important?
A loudspeaker can correctly reproduce only the information slower than its own speed. 

- dynamics and microdynamics are increased (more silent sound details even at lower volume levels) – by using both sides of the membrane, the overall efficiency is by far better than with all other construction principles, offering more freedom with regard to the choice of amplifiers (less powerful amplifiers, but of better quality).

- increased resolution (less sound distortions) – as the membrane displacement for the same volume level is smaller, membrane deformations are smaller as well. This is of special importance in case of more demanding music material.

The principle of the acoustic transformer (horn) is the most natural principle of the transmission of an electric signal into a sound signal (pressure). Our ear is a miniature horn.

BVH 110-30 SE