Approx 5" Woofers: Madisound Speaker Components, Inc.
Tang Band W5-1138SMF 5-1/4" Paper Cone Subwoofer Speaker
GHXAMP 5 Inch 4ohm Woofer Subwoofer HIFI Speaker Low Frequency Fever Woofer 40W 45Hz-5KHz For 2.1 audio Subwoofer DIY
Ai41 Powered 5" Stereo Bookshelf Speakers and DB10 10" Low Frequency Ported Front Firing Powered Subwoofer | Fluance
Custom Level 5 Front Firing Subwoofer Enclosure for the 2019-2023 GMC – Sounds Good Stereo Online
Canton Powered Subwoofer AS 5 Silver | eBay
5 /6/8 /10 Inch Super Slim Square Active Speaker Home Theater Bluetooth 12V 110V 220V HiFi Portable Boom Box Bass Subwoofer Audio Speaker Box - China Active Speaker, 5/6/8 Inch Subwoofer | Made-in-China.com
TXX-BDC4-6" Subwoofer - Quad Stack | Audiopipe
Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer
LG S95QR 9.1.5 Channel Sound Bar and Surround Speakers
Rockville W65K9D4 6.5" 1000w Car Audio Subwoofer Dual 4-Ohm Sub CEA Compliant