Because this is a movie-centric system through and through, you get dipole speakers for the rear-channels, in this case a pair of S 500 D's - again the first of their type to be THX Select 2 certified. As opposed to direct radiating speakers, which fire sound towards the listener, these three-way dipole speakers create a diffuse, enveloping effect, as if the sound is coming from the rear walls, which is preferable for movies.
Again they're beautifully constructed and effortlessly elegant. Each one features 100mm midrange drivers and 25mm dome tweeters on the front and back, while the speaker grilles on each side also slip on without any bolts or clips.
The sub charged with the task of delivering THX's tricky bass demands is the S 5000 SW, which boasts a 300mm neodymium woofer and musters 200W of firepower. As mentioned, you get two with this system, removing the need for one massive back-breaking box, but their 37 x 54 x 47cm dimensions aren't exactly compact either - it could still take some serious reshuffling to squeeze two of these bad boys in your front room.
They're built like a tank, dressed in dark wenge and sport a fetching silver blob on the front that makes them look a bit like Star Wars droids. On the back of each one you'll find a phase switch, volume dial (with a mark helpfully showing THX's recommended level) and RCA input and output.
But enough of its features, how does the system sound? In a word sensational. First of all, it's earth-shakingly powerful - feed it any of the loud, chaotic action scenes from Transformers on Blu-ray and the ferocious sound could strip wallpaper. But the beauty is you don't need an amp the size of a house to make them sing - the system's high efficiency means you get decent results even from modestly-rated amps.