A subwoofer is a speaker that produces low frequency sounds. The sound they produce can be anything from a booming symphony to a bomb explosion in a movie. Subwoofers are something that is attached to the stereo or the television to produce better-quality sound. When a subwoofer is added to a bookshelf audio system, it produces a bass that a small woofer cannot possibly produce. Acoustic instruments and vocals too sound a lot better when these are on. A lot of air goes into creating low frequency sounds. So the bigger speaker you have the better sound it is going to produce. Subwoofers can only produce low-frequency omni-directional sounds. When you play one at your home, you will not be able to tell where the sound is coming from!
Getting the right Ohm rating is necessary when you are in the market for a subwoofer for your home or car. Ohm can be defined as the unit of electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt through its terminals. Subwoofer Ohm may range from anything from 1/2 to 30.
Subwoofer Ohm should be dependent on where you are going to put your music system. If it's your car, an Ohm rating of 1-2 Ohm is enough. In the same way, if its your home you want a subwoofer for, choose one according to the size and design of the room you are going to put it in.
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