Q: Can you tell me about surround sound?

Two-channel audio still reigns in the world of music, but entertainment systems these days typically use six speakers overall so we can enjoy "surround sound" of high-def TV and DVDs. The set-up consists of the left and right channels (which will probably still be your main music channels for CDs and radio) and a center channel at the front of your media room, right and left rear "surround" speakers, plus a subwoofer (the .1) that will most likely be planted somewhere in front. The front speakers should sit at ear level (when you're seated), and the back speakers should sit slightly above ear level. If the screen takes up most of the front wall, you may have no choice but to plant the center-channel speaker below the screen and the right and left speakers on the side walls.

And Then There's 7.1

The latest audio/video receivers and high-definition DVD players serve up two more channels of sound, generally with speaker placement on the sides or in the back of a room (sides are preferred) for an even fuller surround experience. Specially suited for larger rooms, a 7.1 setup will fill whatever gaps there might be, frequently those behind the seating arrangement.

One Speaker Equals 5.1 Sound?

If you're looking for true surround sound and can afford the traditional 5.1 speaker setup, do not mistake the soundbar as a replacement for the real thing. Most people would prefer the performance of separate surround speakers, but in bedrooms or other spots where placing all those speakers might be undesirable, these systems provide a reasonable solution.

Speaker placement is critical to achieving an enveloping, realistic surround-sound effect. A 5.1 setup includes three speakers at the front of the room and two at the sides.

A 6.1 setup has an additional speaker in the back.

a 7.1 arrangement features an additional two speakers.