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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
Blastking PROFILE21 21" 4000 Watts High Output Woofer
FTW-LTE - 21 inch Subwoofer - Mach 5 Audio - the place for bass
Oaktron 21” (533 mm) Ventuno 1600 Watt Subwoofer
Blastking PROFILE21 21" 4000 Watts High Output Woofer
2) B&C 21SW152-4 21" Neodymium Subwoofer 4-Ohm DJ Live Sound 4000Watts Bass Sub
passive/active speaker 21 inch subwoofer, View 21 inch subwoofer, CVR PRO AUDIO Product Details from Guangzhou CVR Pro-Audio Co., Ltd. on Alibaba.com
SB Audience Rosso-21SW800 21" Subwoofer
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.
21 inch Eminence Tour Grade Replacement Speaker – Eminence Speaker, LLC