We've already mentioned that a room's size can have a fundamental impact on the size and type of loudspeaker you should buy now we'll explain why speaker placement is so important.
What is contrast ratio, and how does it affect black-level performance? Contrast ratio is defined as the ratio of the brightest white compared to the darkest black that a monitor can display.
What is resolution, and how does it affect image clarity? Resolution refers to the number of pixels per inch that a screen can display, and it's the main thing that sets High Definition apart from Standard Definition.
Just a short time ago, there wasn't much choice when it came to buying a television – you just went to the store, chose the appropriate size, took the "tube" home and plugged it in.