When you hear the word ‘subwoofer’, you may associate it with an extremely unpleasant vehicle that disturb your home. Let us face the reality of what others think that it is just a boring black box, but we need it for music, games and movies. 12 in subwoofer is a loudspeaker component which is designed to produce low bass frequencies. It has an amplifier which powers the sub and external speakers. Adding a subwoofer to a sound system is one of the most cost-effective upgrades that one can make. If you are really serious about sound effects, you will probably be happier with a new sound system that includes it.