The new technology is easy to explain: the dual box DBX208BPQ is designed as a bandpass system in which the sound pressure exits a large port. The special thing about the design is the internal bass channel, which leads the sound either to the front or to the back.
eBay
Home Theater Bluetooth Soundbar with Subwoofer 4D Surround Speaker for TV Computer Wired Stereo and Strong Bass
Aliexpress UK
The carpeted subwoofer box provides a sleek look while protecting your subwoofer. Simply install the subwoofer into the enclosure, connect it to your car audio system, and enjoy the improved bass performance.
eBay
Wireless Bluetooth Speaker Portable USB Outdoor Home Leisure And Entertainment Equipment Dual Channel Stereo Subwoofer Speaker
Aliexpress UK
HELIX IK EB6.1. Equipped with a powerful 6” (160 mm) high-excursion woofer featuring an ultra-stiff, hand-scooped paper cone, this subwoofer provides rich, deep bass with impressive dynamics. Integrated subwoofer chassis HELIX IK W6-DVC2.
eBay
Adin 26w Vibro Bluetooth Speaker Mini Portable Wireless Subwoofer Neighbor Vibration Resonance Music Speakers Column For Phone
Aliexpress UK
Tuned for Deep Bass: Factory-matched 40Hz tuning frequency provides tight, accurate bass response ideal for 6x9 speakers in car, truck, or custom install applications.
eBay
Q-PERTORS 2PCS 6X9 Inch 5-Way Car Audio Speakers (Pair) - Max 1200W Powerful Sound Subwoofer Kit for Vehicle Modification
Aliexpress UK
10" 0.70 cu ft / 12" 1 cu ft + wadding simulates a larger enclosure for deeper bass. 10" Subwoofers best advised for stealth application, 12" Is vehicle/trim dependent - ask. Flush mount subwoofer £5.
eBay
M1 Portable Bluetooth Haut-Parleur Musique Stéréo Surround Mini USB Extérieur Subwoofer Haut-Parleur Lecteur Audio Haut-Parleur
Aliexpress UK
10" Subwoofers best advised for stealth application, 12" Is vehicle/trim dependent - ask. Flush mount subwoofer £5. 10" 0.70 cu ft / 12" 1 cu ft + wadding simulates a larger enclosure for deeper bass.
eBay
GHXAMP 3 Inch Slim Subwoofer Bass Speaker, Dual Passive Diaphragm ,Waterproof 20W 6Ohm, Ultra-Thin Design (25.5x13.4x3.1cm) 1PC
Aliexpress UK
Product Description: Our custom fit subwoofer enclosures are an ideal way to improve your bass in your vehicle. They are designed and manufactured to fit your vehicle and to take up as least room as possible. The custom fit enclosure parameters are chosen so that you can install most manufacture of subwoofers. Our custom fit subwoofer enclosurers are manufactured in our european factory, in which the highest of quality MDF is used as standard. Package Includes: - Vehicle Specific Custom fit subwoofer enclosure - Left Fitment Custom Fit Enclosure Specification: - Board - MDF - Carpet - Black - Hole Size - 10 - Mounting hole diameter - 232mm - Undercut diameter - 272mm - Subwoofer depth - 144mm - MAX magnet diameter - 200mm - Volume closed.
eBay
4/5/6 Inch Car Speakers 100/160W HiFi Coaxial Subwoofer Universal Automotive Audio Music Full Range Frequency Car Stereo Speaker
Aliexpress UK
Enclosure Type: Trapezius bass enclosure. RMS Power: 1000 watts. Driver: SLICK 12 x2.
eBay
EVO 15'' 3 Way Full Range Speaker With F28 F18 18 Inch Subwoofer Pa System Outdoor Concert Sound System
Aliexpress UK