800W Stereo Surround Sound. Peak Power：800W. Ultra-thin Subwoofer， Saving valuable space in your vehicle. Compatible with various car stereo audio systems and car host devices. Excellent Heat Dissipation ， Cast aluminum ensures stable performance.
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200W 10 Inch Bluetooth Trapezoidal Subwoofer Car Audio Power Active Subwoofer Speaker Car Woofer 12/220V with Remote Control
Aliexpress UK
Probably from storage. Storage wear / tear to the box.
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Subwoofer Para Coche 12 Inch Car Audio Modified Bass Box 12v Active High-Power 1200W Car Subwoofer Amplificado
Aliexpress UK
Max Output Power: 1200W. 1 Subwoofer Amplifier. 6“ 8“ speaker gives A different kind of heavy bass effect. Bass Boost: 0to+12db. Speaker: 6“ 8”. Low Level Input Sensitivity: 300mV. High level Input Sensitivity: 0.9v.
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Car Audio Modified 12V Active Slim 55mm Subwoofer with Maximum Power 800W Car Speaker System Subwoofer Under The Seat
Aliexpress UK
8" 800W Active Underseat Car Bass Box Audio Subwoofer Sub Speaker Amplifier UK. 1200W Active Underseat Car Bass Box Audio Subwoofer Sub Speaker Amplifier. 600W 10" Car Subwoofer Audio Sub Speaker Active Rectangular Drive-By-Wire Black.
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Car active subwoofer mounted subwoofer car audio 8-inch 12V high-power
Aliexpress UK
Heavy Duty Subwoofer Grill. 300 Watts Max Power. Frequency Response: 34Hz - 1.5kHz. Built-in Amplifier Specifications.
eBay
50Core High Power Overweight 1500W 4Ohm 10 Inch Speaker Driver Unit Car Woofer Subwoofer LoudSpeaker Bass High Fidelity
Aliexpress UK
8" 800W Car Subwoofer Speaker 12V Power Amplifier Audio Music Player. Max Power: 800W. 1x Subwoofer Speaker. Bass boost: 0to + 12dB. Low frequency ability of the bass horn, high quality low tone output.
eBay
DIY Audio Modification, 6X9- inch Connected Trapezoidal Dual Speaker Housing, Car Mounted Subwoofer Box
Aliexpress UK
NEW MODEL 12 “Twin Active Amplified Double Bass Box Sub Car Subwoofer Amp Amplifier 3600W. DOUBLE 12" ACTIVE ENCLOSURE. ENCLOSURE SIZE 2” VOICE COIL WITH PP CONE. FACTORY MATCHING CARPET TRIM. 2 x 12” WOOFER WITH TWO 40 OZ MAGNET.
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12V Power Subwoofer 2.1 Channel Car Amplifier Lepy LP-168S Auto Audio Bass Output HiFi Stereo Sound With AUX Function LoudSpeake
Aliexpress UK
Max Output Power: 1200W. 1 Subwoofer Amplifier. 6“ 8“ speaker gives A different kind of heavy bass effect. Bass Boost: 0to+12db. Speaker: 6“ 8”. Slim fuselage, installed under the seat. Low Level Input Sensitivity: 300mV.
eBay
12inch Car Spare Tire Subwoofer 800W Active Super Bass Car Speaker High Power Car Audio Mounted Under The Trunk Car Modification
Aliexpress UK