The classic Terminator car subwoofer bangs out bass in rigs all over the world. Its economical price made it our most popular entry level sub over the last several years. And the Terminator still outperforms any sub in its class. The terminator subwoofer is loaded with MTX engineering technology including Spider Plateau Venting that ensures trouble free performance and an Assymetrical Linear Drive System that limits distortion ensuring unbeatable performance. 1 Buy = 2 Subwoofers!