Wavefront Analysis

Acoustic FEA software provides us with unprecedented access to information about the way sound radiates. In a 'virtual' implementation of the old-fashioned physics lab ripple-tank, we can watch the propagation of sound:

This animation shows the acoustic radiation pattern from the UniQ tweeter mounted in a plane baffle at 30kHz.
The classic 'lobing' behaviour is evident.
When the tweeter is placed inside the midrange cone waveguide,
the natural directivity of the tweeter is modified significantly at lower frequencies.

Here, in an early prototype cone profile, we can clearly see modal (resonant) behaviour in the cone
air cavity at 14kHz. This also manifested itself as a 'dip' in the frequency response.

By modifying the cone profile this 'dip' is eliminated.
The Wavefront Analysis shows the wavefronts recombining as they exit the cavity.