PA Systems, sound systems, speaker boxes, live Sound - Dancetech
Speaker Plans
Subwoofer and Full-Range Cabinet Designs
Plans to build SAW112 single 12" subwoofer | eBay
APEX2181 - Speakerplans.com Forums - Page 1
DIY Active Subwoofer : 15 Steps (with Pictures) - Instructables
BSX Dual 21 inch DJ Subwoofer Speaker with Long Excursion Design - Buy DJ subwoofer, Subwoofer speaker, Subwoofer Design Product on Sanway Professional Audio Equipment Co., Ltd.
BUILD THIS! Compact 10" two-way PA speaker design - Celestion
How to Design Your Own DIY Subwoofer - TurboFuture