Questions? Feedback? powered by Olark live chat software
PHENOMENAL BASS IN YOUR BMW, IN 90 MINUTES.
SWAP YOUR FACTORY UNDERSEAT WOOFERS WITH OUR PLUG
& PLAY UPGRADE KIT, AND GET INCREDIBLY POWERFUL, TIGHT BASS.
  • › No expensive, complex additional amplifiers, wiring, hardware, or equipment required
  • › Includes every single thing you need (except basic hand tools tools)
  • › Do-it-yourself installation in less than an 90 minutes, even for a novice
  • › Keep every single inch of your trunk
How it works
How Do WE deliver bass that's louder, cleaner, and tighter,
all without changing the factory amplifier?
In a word, efficiency. Every watt of power generated by your factory amplifier yields far more bass output with our woofers. So even without changing your factory amp,
you get breathtaking bass response.

(With your factory woofers, your amplifier is like a 200hp motor in a Camry.
With ours, it’s like the same 200hp motor in a Lotus Elise)

One

Remove your factory underseat subwoofers

Two

Swap your factory woofers with ours, which are 100% plug and play (don't need to change ANY other component in the car)

Three

Enjoy louder, tighter, punchier bass response - without changing any other component

Key Features & Technology

Jaw-dropping bass response

Enjoy louder, tighter, punchier bass response - without changing any other component.


100% Plug & Play

Installs and fits just like your factory BMW woofers, right down to the bolts and factory style plug. (NOTE: Vehicles with “Base” audio systems require slight modification to factory enclosure that add mere minutes to installation)


Simple, Do-It-Yourself Installation

Takes less than 90 minutes and only basic tools, even for a total novice. No complex wiring or additional hardware or installation is required. Simply unbolt your front seats, remove the woofer covers, unbolt your factory woofers, and install ours. That's it!


YOU'LL LOVE YOUR NEW WOOFERS,
GUARANTEED.
IF YOU'RE NOT IN LOVE, RETURN THEM
WITHIN 30 DAYS FOR A FULL REFUND + UP
TO $125 OF INSTALLATION COSTS.

Super Tight, Punchy Midbass

Your factory underseat woofers aren't just subwoofers; they're midbass drivers. That means they play not just the lowest frequencies, but also "punchy" midbass frequencies like snare drums and high bass guitar notes.

Unlike our woofers, which are designed to outperform the factory woofers for both subwoofer and midbass frequencies, other underseat subwoofer upgrades on the market are only capable of playing sub frequencies, not midbass, so you miss a huge portion of the frequency range.


Perfectly matched to our legendary
Stage One Speaker Upgrade Kit

Amazing bass response can transform your listening experience, but if you want the absolute best, overall sound quality and clarity matters too.

That's why we engineered the Ghost Underseat Subwoofer Upgrade System to perfectly and seamless match our legendary Stage One Speaker Upgrade Kit.


4 YEAR WARRANTY
OUR PRODUCTS ARE BULLETPROOF.
SO IS OUR WARRANTY.

Everything we sell has been engineered for durability and longevity, and we know what we sell will last. And last. And last. That’s why our speaker upgrades and subwoofer systems are backed with our industry leading 4 year limited warranty. So if something breaks, send it back. We’ll replace it at no charge.


Factory matched impedance

Depending on your audio system, your factory BMW woofers come in 2, 4, or 8 Ohm impedance. Our woofers are matched to the impedance of your factory woofers (we have different versions for each) to maximize performance and ensure the longevity of your factory amplifier.


Upgradeable design
with 100W RMS / 200W Peak
Power Handling Per Woofer

Even though our woofers are designed to be extremely efficient to maximize the output of your factory amplifier, they're also built for upgradability, you can power them with an aftermarket amplifier of your choice up to 100W per channel.

Translation? If you'd like to melt your face off with absurd quantities of bass, you can -- just add an amp.


Extremely efficient design & power
utilization

We utilize your factory amplifier to generate amazing bass response in your BMW. To do so, we've designed our woofers using technologies like oversized neodymium magnets and lightweight poly cone to maximize every watt of power they generate and translate that into raw output. That means amazing bass response without replacing your amplifier.

INSTALLATION OVERVIEW

One

Just unbolt your front seats and tilt them back (no need to unplug any wires)

Speaker Cover

Two

Unscrew the woofer covers and remove them

Unlplug

Three

Unscrew, unplug, and remove the factory woofers

Speaker

Four

Install and plug in your new Ghost Woofers

Seat

Five

Reinstall the factory woofer cover, and bolt your seats back down

Checklist

Six

Enjoy!

You already have promo code "" applied to this order. Would you like to apply "" instead?