Posted in: History | Technology
The curved profile of the waveguide has been optimised with the help of Finite Element Analysis in order to give benefits such as a controlled directivity pattern and increased radiation efficiency.
1. Even dispersion characteristics
The tweeter has a more controlled off-axis dispersion pattern which allows for greater listener positioning flexibility as the tonal balance won’t change significantly when moving away from the central listening ‘hotspot’
2. Improved time alignment
The depth of the waveguide means that the tweeter voice coil is located deeper within the cabinet and is more in line with the mid-bass drivers. A better sense of timing will be perceived because the wave fronts from the tweeter and drivers will reach the listener simultaneously
3. Lower crossover frequency for wider directivity
The increased radiation efficiency provided by the waveguide allows the crossover frequency to be decreased. This is particularly important for the Bronze 100 and Bronze 500 models where a 8" (200 mm) mid-bass driver is used because the directivity pattern starts to narrow at a lower frequency compared to a smaller diameter driver. The lower crossover frequency helps to widen the directivity around the crossover region by redistributing some energy to the tweeter