The crossover features precision filters with adjustable cut-off ranging from 40 to 250Hz. Input & output is by balanced XLR, there is also unbalanced RCA phono line in. LF Woofer 15". Speaker Type Bass-reflex Active Subwoofer.
eBay
8ohm 157508F 15inch 500W NEO Woofer Speaker Bass Woofer Speaker 15 Inch sub woofer mid bass neodymium speaker driver
Aliexpress UK
This Lyonforge Woofer is designed for top performance in both speaker repairs and new projects. It can handle 800 watts of power and has an 8 Ohm impedance, providing deep and powerful bass. It's ideal for bass cabinets and has a frequency response that covers the whole of the low frequency spectrum.
eBay
Soundcore Boom 2 Plus | Powerful Outdoor Bass Bluetooth Speaker+Anker Prime 27,650mAh Power Bank (250W)+Anker USB-C Car Charger
Anker UK
This Lyonforge 15" Woofer is suitable for both repairs and new speaker projects. It handles up to 300 watts of power and has an 8 Ohm impedance, making it good for sub-bass, or the bass drive in full-range cabinets.
eBay
NDR-515 Professional Big Power 15 Inch BT Stereo HIFI Wooden Wireless Karaoke Speaker With Mic Party Stage Trolley Bass Speaker
Aliexpress UK
Collection also fine.
eBay
AIYIMA 1000W 3 Ways Audio Speaker Crossover Treble+Midrange+Bass Hifi Professional Frequency Divider for 15-18 Inch KTV Speakers
Aliexpress UK
Excellent build quality and performance as you would expect from Eminence. Exact Specifications Unknown, removed from a 1000W peak, 500W program PA Speaker. Tested both with music and a full test tone sweep and working perfectly.
eBay
15 inch Subwoofer 2000W 8Ohm Surround Powerful Big Magnet Cloth Edge Paper PA Broadcast Stage Bass Professional Woofer Speaker
Aliexpress UK
Tested both with music and a full test tone sweep and working perfectly.
eBay
SOTAMIA 1Pcs 8 Inch 200W Subwoofer Speaker 4 Ohm Hifi Music Audio Bass Home Theater Power Loudspeaker Driver Bluetooth Speaker
Aliexpress UK
Professional bass speaker, with appealing parameters and a built-in low-pass filter, which produces a powerful deep bass-sound. Features a tophat in the top panel for stand mounting. The cabinet is equipped with recessed handles, protective corners, and a strong grille. Main Features Large 15" 600W woofer Built-in low pass filter Covered with damping carpet Deep resonance-free bass.
eBay
Bass Reflexes Tube Bass Reflexes Air Tube Speaker Vent Convenient Installation Inverters for 2-15" Speaker P9JD
Aliexpress UK
Whether you are a DJ needing replacements for a worn PA speaker cab or subwoofer, sound engineer needing spares or making your own DIY speaker cabinet: these two 15" woofer drivers from Skytronic are designed for accurate mid and bass frequencies. Rugged and reliable for replacement; these will produce excellent sound quality with vented magnets and low resonant frequency between 40Hz and 3.5kHz: built strong and built to survive those power peaks when the situation arises. .
eBay
Car Speaker Set High Quality Car Audio Two-Way Speaker Full Range Speaker Car Front Door Speaker Modification Bass Speaker Kit
Aliexpress UK