600W Max / 200W RMS Power Output. Boost your car audio with theIn Phase XTB-8A — a compact yet powerful 8" active subwoofer enclosure built for clean, deep bass and easy installation. With600W max power and a built-in Class D amplifier, this sub is perfect for underseat or boot-mounted installs where space is limited but performance is essential.
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LQ AUDIO Car Subwoofer speaker For Mercedes benz W213 W205 W222 GLC C E Series Bass seat music
Aliexpress UK
Built-in 240W Amplifier (120W RMS). This compact subwoofer system works well under or behind the seat of a pickup truck, in a sedan trunk, or in the hatch of an SUV. The compact PWE-S8 amplified subwoofer system lets you add deep, accurate bass to your sound system without taking up much space in your vehicle.
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100W 4ohm Low Frequency Bass Shaker Vibro Speaker Subwoofer for Car Seat Home Movie Theater Hifi
Aliexpress UK
1 x 10" Sub box.
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Car Subwoofer Speaker For Mercedes Benz W205 W213 W222 GLC C E Serie Door seat audio music stereo
Aliexpress UK
VIBE 8" 240 WATTS SLIM SUB UNDERSEAT PULSE BASS CAR AUDIO. Enclosure Type : Active Slim Fit Bass Enclosure. High level input with Auto sense circuit allows the amplifier to turn on and off when using high level input without the need for a remote turn on wire.
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For Tesla Model X Under Seat Storage Box Center Console Wireless Charging Pad Armrest Storage Pad
Aliexpress UK
In Phase USW 8 underneath subwoofer with RCA cables, fitting brackets and screws. DOES NOT COME WITH REMOTE AND POWER CABLES - You can buy this separately but my one does not have it!
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2 Pcs for SEAT Ateca Tarraco Koraq Kodiaq Under Front Seat Rear Footwell Air Duct Outlet Vent Grille
Aliexpress UK
Been in storage a few years but has never been used.
eBay
2pcs for SEAT Ateca Tarraco Koraq Kodiaq Under Front Seat Rear Footwell Air Duct Outlet Vent Grille
Aliexpress UK
They have been designed to combine the amplifier, subwoofer, and enclosure all into one fantastic product. This makes installation neater and easier as well as produces a great sound. A totally unique design that maximises bass output without taking up much space!
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For Tesla Model Y Under Seat Storage Box Case Car Seat Organizer Vehicle Underseat Drawer Holder for
Aliexpress UK
Enhance your Mini's audio experience with the genuine Mini F55 Underseat Subwoofer Pair, featuring an 8-inch size that fits perfectly under your car seats. These subwoofers boast a robust 2 Ω impedance, ensuring they deliver powerful, deep bass even at low volumes. The sleek black colour complements any car interior, maintaining the iconic Mini aesthetic. The underseat subwoofer pair is designed specifically for the Mini F55 model, with the manufacturer part number MW 8BMW-D, guaranteeing compatibility and quality. Upgrade your vehicle's audio system with this discreet yet impactful addition, placing one under each seat for a balanced sound stage that transforms every drive into a sonic journey.
eBay
2pcs for SEAT Ateca Tarraco Koraq Kodiaq Under Front Seat Rear Footwell Air Duct Outlet Vent Grille
Aliexpress UK