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21″ 4000 Watts High Output Woofer – PROFILE21 – Blastking
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
1000 Watt Black Benson Acoustics 21 Inch Subwoofer Speaker, 6 Ohm