STLF-1504-4 | 15" 450W Raw Replacement Woofer w/ 4" Voice Coil for Subwoofers – Sound Town Inc
STLF-1804-8 | 18" 450W Raw Woofer Replacement Speaker, 4" Voice Coil, 8-ohm – Sound Town Inc
Aiyima 5.25 Inch Audio Music Subwoofer Speakers Dual Magnetic High Power Fever 4 8 Ohm 100 W Woofer Loudspeaker Diy Sound System - Speakers - AliExpress
12", 8 ohm, 100 watt, Standard Speaker | Parts
8" Subwoofer Nippon Car Sub Woofer Replacement Speaker NWX-820-8 100 W – Pricedrightsales
NEW 4" inch Super Mini Woofer Speaker Driver 4 ohm 100 watts | eBay
Amazon.com: PRV AUDIO 6.5 Inch Speakers Midbass Woofer 6MB200-4 v2 200 Watts Program Power, 4 Ohm, 100 Watts RMS, 1.5 in Voice Coil, Perfect for Small Custom Enclosures for Pro Car Audio