Enjoy powerful, accurate bass in your vehicle with today's component subwoofers. Drop a sub into a compatible enclosure, power it with a suitable amplifier, and listen to the music take on a whole new dimension in your vehicle. A subwoofer and enclosure matched at the factory for surefire performance made by Alpine or Boston Mobile Audio or JL Audio or Kenwood are enclosed subwoofers take the guesswork out of adding bass to your vehicle. Or try these preloaded custom-fit sub enclosures from JL Audio or MTX that are form-fitting subwoofers designed to fit into unused spaces in specific vehicles. Many models come with built-in amplifiers for an all-in-one bass solution.