Bavsound BMW Ghost Underseat Subwoofer Upgrade

GET DOUBLE THE BASS IN YOUR CAR IN ABOUT AN HOUR.Simply swap your factory underseat woofers with our plug & play upgrade kit and, get incredibly powerful, tight bass.  TIGHTER, PUNCHIER BASSMore bass without clarity is just noise. Our woofers are not only louder, they're cleaner and clearer. DO-IT-YOURSELF, PLUG & PLAY, EASY INSTALL  Do-it-yourself installation in about an hour, even for a novice. You don't even have to remove your seats! MORE SPACE = MORE FUN Unlike other subwoofer solutions, upgrading your factory woofers takes up no extra space. HOW DO WE DELIVER BASS THAT'S LOUDER, CLEANER, AND TIGHTER WITHOUT CHANGING THE FACTORY AMP?In a word, efficiency. Every watt of power generated by your amplifier yields about 2x the bass output with our woofers vs factory woofers. If you're not familiar with the concept of "efficiency" in audio, just use this analogy: with your factory woofers, your amplifier is like a 200hp motor in a 4,000lb Camry. With ours, it’s like the