It's worth pointing out that this isn't a one-box package - all of these speakers can all be bought separately and there's a wide range of other Radius HD models to choose from, all with different drivers and sound characteristics, so you can mix and match speakers to suit your needs. The models selected here are all designed to complement each other in terms of crossover and voicing. Although our samples feature the piano black lacquer finish, they're all available in silver and piano white lacquers, while the 45HDs and 360HDs additionally come in Walnut and ‘Rosemah' real wood veneers.
And now here's the science bit. Inside the soundbar, each of the three channels has a dedicated braced compartment and individually specified crossovers. The centre channel boasts twin 4in Metal Matrix Polymer (MMP) II mid/bass drivers and a 1in Ceramic-Coated Aluminium Magnesium (C-CAM) gold dome tweeter, while the left and right channels house single 4in MMP II drivers with a 1in C-CAM tweeter - all magnetically shielded and arranged in the D'Appollito layout to aid dispersion.
These newly-developed MMP drivers are designed to offer higher sensitivity, improved linearity and low distortion, while the new C-CAM tweeters achieve frequency extension of over 35kHz, which means detailed Dolby True HD and DTS HD Master Audio soundtracks should be in safe hands. The unit also features an Anti-Resonance Composite front baffle, which provides the necessary structural rigidity and vibration damping, while the PTC auto-reset protection circuit kicks in when the speakers are over driven to prevent any damage being done.
As for the R45HDs, they feature the same PTC circuit as the One HD and are equipped with a 3in mid-bass driver and rear-firing 3/4in gold dome tweeter, while the 360 HD sub features a downward firing 8in driver and musters up to 100W of pure bass muscle.