Stereoplay – Technology in Detail: no Dead Angle

The same difference in angle to the side has a different effect than for up or down with separate neighbouring chassis. Therefore the omnidirectional of conventional boxes is position dependent, especially at larger angles relative to the box.

The key to the understanding of point spotlights or coaxial systems is located in the less pronounced angle dependency of their dispersion behaviour. It’s specifically to the transition area where mid-range and tweeter together determine the sound pressure.

The Kef will this transition at 2500 Hz the Tannoy Piega at 1400. does not provide details, the separation is likely due to construction but – Ribbon prefer a high-frequency coupling – are over 3000 Hertz. In any case it is areas of highest ear sensitivity, which are for the spatial representation and the dynamic of crucial importance.

Midrange and tweeters are geographically separated, as in conventional boxes the distances are inevitably dependent on the angle to the ear of the listener. Therefore, it makes a significant difference, where listeners or measuring microphone located relative to the box in the room. The same difference in angle to the side has a different effect than for up or down with separate neighbouring chassis. Therefore the omnidirectional of conventional boxes is position dependent, especially at larger angles relative to the box.

Developers must inevitably decide they optimize the dispersion characteristics for which (narrow) range. Outside of these zones of good feeling, cancellations are unavoidable, because the portions of adjacent sound sources arriving times equals – and even different phase.

Point spotlights above or below any difference makes, the energy flows more evenly. Here, subtleties seem like membrane surface and geometry or sound wall effects, which the producers well.