Custom Sub Subwoofer Box For Sundown Audio SA-10 - I Build The BEST Box For It | eBay
Amazon.com: CALIDAKA DIY Bluetooth Speaker Box Kit Electronic Sound Amplifier,Build Your Own Portable Wood Case Bluetooth Speaker with Sound,Science Experiment and STEM Learning for Teens,Kids Adults : Electronics
12" HDS 3.2 Series Subwoofers
Speaker & Subwoofer Kits
2-Way Bookshelf Speaker Kit - Matched Parts to Build a High-End 6.5 Inch 2-Way Bookshelf Speaker.
Next Level Fabrications 2x 18" Flat Pack Ported Enclosure Kit - SSA STORE
Copperhead with Subwoofer 2.1 Channel Powered Desktop Speaker System Kit
Tuning your subs
Amazon.com: Scosche SE12KT 12-Inch Single Car Subwoofer Enclosure with Gray Carpet - Assembly is Required : Electronics
Amazon.com: BOSS Audio Systems CUBE8 Car Subwoofer and Amp Package – Built-in Amplifier, 8 Inch Subwoofer with Passive Radiator, Remote Subwoofer Control : Electronics
Subwoofer Speaker Kits: Madisound Speaker Components, Inc.