Loudspeakers

C-Cubed Drivers

Described as a new technical platform that 'elevates the 5050 and 5000 series beyond its class', the C3 (Continuous Curved Cone) mid/bass driver profile aims to satisfy the potentially conflicting demands of a deep 'long throw' pistonic bass with an extended mid frequency dispersion that integrates with the dome tweeter at crossover. Basic geometry suggests that a 'straight' cone profile will provide the most rigid structure

Breakup modes can be 'spread' by adopting a flared cone profile (full-range drivers with parabolic profiles were once popular...) with better directivity control of the cone's higher frequency output at its edge. The shape of the surround, and physical materials at the surround/cone junction, are also key to minimising mistermination (an acoustic reflection at the joint) and off-axis response at the top of the mid/woofer's range. Unfortunately a flared cone shape is the least suitable for extended low bass output, so Q Acoustics has modelled, and tested, a multi-radius cone that realises a single, smooth, continuous curve profile with optimised bass, mid-frequency directivity and breakup performance. PM