Sound+Bar+(Speaker+System)

=Sound Bar (Speaker System)= SGRANGER12

Purpose

 * To have one large speaker pointed in different directions rather than many small speakers

Energy

 * Converts electrical signals into sound waves

Controls

 * Volume control
 * Settings

Materials

 * Sound bar speakers
 * Wires to connect the speaker, sound woofer and television
 * Subwoofer

Science
What is scientific principle is central to its operation?

Design:

 * thin speaker box
 * on/off switch
 * volume switch
 * hangs on the wall or can sit on a table/stand
 * easy to use and set up
 * fits in small places
 * comes with sound woofer (can be wireless)
 * remote control (can be set with television or universal remote)
 * (systems vary)

Evolution

 * the sound bar originally came from multiple speakers

Competitors

 * virtual surround sound speakers
 * multiple-piece sets

Partners

 * Surround Sound Systems
 * Speaker (Subwoofer)
 * Stereo Amplifier
 * Siblings**
 * Computer Sound Bar Systems
 * Subwoofer