FTW-LTE - 21 inch Subwoofer - Mach 5 Audio - the place for bass
Source subwoofer 21 inch Powerful Clear low-frequency neodymium cone driver speaker on m.alibaba.com
Oaktron 21” (533 mm) Ventuno 1600 Watt Subwoofer
Amazon.com: Sound Town 21” 1000W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-21500A) : Musical Instruments
MT21A Built-in DSP single 21" Self-powered Subwoofer with Compact Cabinet Box - Buy 21" subwoofer, single 21 inch subwoofer, self powered subwoofer Product on Sanway Professional Audio Equipment Co., Ltd.
B&C 21SW152-4 21" 4000W Neodymium Subwoofer 4-Ohm
2) B&C 21SW152-4 21" Neodymium Subwoofer 4-Ohm DJ Live Sound 4000Watts Bass Sub
Blastking PROFILE21 21" 4000 Watts High Output Woofer
One unit (not pair) |21 Inch Woofer for Bass Compensation of Open Baffle or Cabinet | W-21 - Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY