Sky have enough capacity for around 40 channels. Would you like to know more . DTS is another multi' channel encoding system that theoretically can out perform Dolby Digital, DTS uses higher bandwidth, more information, which can provide a higher sense of realism. Amplifiers and receiver's can decode a DTS signal. Also only the latest DVD players can pass a DTS encoded digital signal.
Ordinary televisions are limited to the size they can be, due to the way the picture is generated.
A way to have a larger screen is to utilize mirrors to bent the light rays being projected onto the screen, this cannot be done with big glass tube. Remember those overhead projectors you used to see at school, the same theory is being put to use for the Projection Television. I'm saving my pennies for a RPTV one day. Some of the easiest ways to make things are in fact very easy. Replace the string like speaker cable that always comes with the speaker's, with larger more audiophile type cable.