AV receiver Most home cinema systems use an AV receiver to switch between their audio/video sources (typically a DVD player/recorder and auxiliary sources such as a Sky/Freeview/cable set-top box or games console). The receiver also powers the speakers, decodes digital multi-channel audio soundtracks and the very latest examples can even improve the quality of your video sources.

Blu-ray A CD-sized disc that contains high-definition movies, audio and images. Blu-ray discs can be played on a Blu-ray player/PS3 or a hybrid Blu-ray/HD-DVD player.

HD High Definition (HD) is a method of broadcasting and displaying high-resolution television and movies, which is gradually becoming the industry standard. Almost all new televisions are HD-compatible.

HD-DVD Software format that when played on high-definition capable players generates images and audio soundtracks of the highest quality

LCD/Plasma The two main types of flatscreen television both offer superb resolution and performance. Which one you opt for depends on how and where you will use your screen: ask our experts for advice and the opportunity to try out your favourite movies on different models.

Projector Compact front projection display device, usually based around DLP or LCD technology, and used in conjunction with a fixed, pull-down or motorised projection screen.

Surround sound The traditional 5.1 surround-sound speaker set-up employs a subwoofer, a pair of speakers placed at either side of the screen and centre speaker underneath, with two further effects speakers positioned behind the viewing position. 7.1 systems employ another pair of effects speakers to achieve an even more convincing wraparound effect. 2.1-channel systems attempt to give a semblance of surround sound feel from just two speakers and a subwoofer.