Come up with a budget then compare the various brands and models that fit your needs. Research those brands in consumer magazines, a local audio store or online.
Think about getting a passive subwoofer if you want extreme bass or need to fill a large theater with sound. They are powered by a separate amplifier which you will need to buy specifically. This allows for more options in the amount of power you want.
Get a powered subwoofer if you want to save time and money. A powered subwoofer comes with a built in amplifier. The two are matched together for the finest sound reproduction.
Buy a forward facing subwoofer if you want precise bass. The speaker either faces the front or the side of the enclosure and you can direct the sound to a specific area.
Bring home a downward facing subwoofer for optimum “feel” of the bass. They direct sound directly down and reverberate through the floor to your viewing area.
