Most home theater speaker system had five speaker for surround sound and the most popular brand in the market which gives the best and solid sound surrounding are Dolby Pro Logic and Virtual Dolby. The home speaker system had two big speaker which is most place, one in the right and the other on the left of the screen on towards the corners of your room. A center channel speaker, a surround speaker and a powered sub-woofer. All of this speaker had its own function which make the sound comes from the screen like real and exciting and trilling.
With today's technology many branded company designed their speaker with the best sound surrounding and even the size of the speakers are going smaller but the sound are much solid.