Pioneer TS-WX130EA Under Seat Subwoofer Amplifier Space Saving Car Bass Box Sub TS-WX130EA Space Saving Active Subwoofer with built-in Class-D Amplifier. (160 W) Powerful Bass, without losing space.
eBay
Single 6X9 Speaker Box Universal Sealed Speaker Boxes Car Speaker Box Car Subwoofer Boxes for Car
Aliexpress UK
Been in storage a few years but has never been used.
eBay
DOSS Bluetooth 5.3 Speaker Extreme Boom Pro 100W Stereo Sound Bass Subwoofer Sound Box IPX6
Aliexpress UK
Free Amp Kit included - 10g upto 1000 watts RRP £10.99 PRO enclosures are designed in the United Kingdom and manufactured in Euorpe, we use best quality MDF. PRO 12" Single Sealed 30L Subwoofer Enclosure, built-in terminal with gold screw posts constructed with high quality MDF 18 wood enclosure. The front (where the woofers loaded) is flat and the back is slanted with black acoustic carpet. - 282mm hole diameter - 280mm mounting depth - 365mm (w) x 355mm (h) x 380mm (d).
eBay
USB Wired Wood Speakers Bass Stereo Subwoofer Sound Box 3.5mm AUX Input USB Power Computer Speakers
Aliexpress UK
Appears to be in good condition. I do not know if it works.
eBay
DOSS Home Wireless Speaker Bluetooth 5.3 Powerful 80W Superior Sound Bass Subwoofer Sound Box TWS
Aliexpress UK
Its built-in MOSFET amplifier boosts no less than 160 watts through the aluminium cone woofer. Suitable for any kind of music, this sub produces a deep, robust and high-power bass, all the way down to 30 Hz.
eBay
Subwoofer Para Coche 12 Inch Car Audio Modified Bass Box 12v Active High-Power 1200W Car Subwoofer
Aliexpress UK
Pioneer TS-WX306B 30cm Subwoofer Pre-Loaded In Sealed Enclosure (1300W). The TS-WX306B enclosure houses a durable woofer that is built with a Voice Coil Cooling System (VCCS), improving heat removal from the centre of the subwoofer, thus increasing frequency response and high power handling.
eBay
Car Subwoofer 600W Car Audio Active Subwoofer For Car Ultra Thin Bass Box Bass Speaker for Vehicle
Aliexpress UK
20 cm (8") Downfire Bass reflex System. Crunch GTO 8 BP - 20cm Bandpass Subwoofer. The CRUNCH subwoofer family is growing with a slightly different sub box, which is very compact and flat. With its very low height of only 15 cm, the housing also fits in the double bottom under the actual trunk of the vehicle.
eBay
6.5 Inch Active Heavy Subwoofer 100W Standalone Subwoofer Bass Audio Boombox Speaker
Aliexpress UK
Pioneer TSWX70DA Ultra Flat Slim Subwoofer. This item is a soft demo ,item don't come with original company box and wiring kit as forgot to remove from old car . Item is nearly new Item non returnable
eBay
4-inch Dual Subwoofer Empty Box with Power Amplifier Hole Active Subwoofer Drawer DIY Car/Home
Aliexpress UK