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MARK HENDRIKX - AUTOMOTIVE ENGINEER AT MOSSELMAN

Swap your factory underseat woofers with the BAVSOUND plug & play upgrade kit, and get incredibly powerful, tight bass.

BAVSOUND utilizes your factory amplifier to generate an amazing bass response in your BMW. To do so, they designed the woofers using technologies like oversized neodymium magnets and lightweight poly cones to maximize every watt of power they generate and translate that into raw output. That means an amazing bass response without replacing your amplifier. Installs and fits just like your factory BMW woofers, right down to the bolts and factory-style plug.

Amazing bass response can transform your listening experience, but if you want the absolute best, overall sound quality and clarity matter too. That's why BASOUND engineered the Ghost Underseat Subwoofer Upgrade System to perfectly and seamlessly match the legendary Stage One Speaker Upgrade Kit.

MARK HENDRIKX - AUTOMOTIVE ENGINEER AT MOSSELMAN

DOUBLE THE BASS IN YOUR BMW, IN ABOUT AN HOUR.

DOUBLE THE BASS IN YOUR BMW, IN ABOUT AN HOUR.

  • Tighter, Punchier Bass
    More bass without clarity is just noise. Our woofers are not only louder, they're cleaner and clearer.
     
  • Includes everything you need (except tools)
    No expensive, complex additional amplifiers, wiring, hardware, or equipment are required. Required tools are sold separately.

  • 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?

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 same 200hp motor in a 2,000lb Lotus Elise - twice the performance with the same power.

YOU WON'T JUST LISTEN TO YOUR MUSIC. YOU'LL FEEL IT.

YOU WON'T JUST LISTEN TO YOUR MUSIC. YOU'LL FEEL IT.

This frequency response graph shows the significantly higher, more balanced output of our subs (yellow) vs. factory Harman Kardon subs (white).  Higher and "flatter" is better.

2X THE BASS - Our woofers are 10 dB+ louder from 20Hz to 60Hz vs. factory woofers, resulting in twice the loudness in this critical “sub-bass” range (and over 8x the sonic energy). You won’t just hear the bass; you’ll feel it.

NEARLY FLAT FREQUENCY RESPONSE FOR EXCEPTIONAL LINEARITY in the key sub / mid-bass frequency range from 40Hz to 200Hz (+ or - 3 dB). Which means "clean" and balanced bass.

Technical details

WHAT'S INCLUDED?
2x Bavsound Ghost Underseat Subwoofer, 8 Ohm 

SIMPLE, DO-IT-YOURSELF INSTALLATION
Takes less than 90 minutes and only basic tools, even for a total novice.
Simply unbolt your front seats, remove the woofer covers, unbolt your factory woofers, and install ours. That's it!