4) B&C 21SW152-8 21" Neodymium Subwoofer 8 Ohm DJ Live Sound 4000Watts Bass Sub | Reverb
AccuGroove Whappo Grande Bass 21" Subwoofer – AccuGrooveLLC
Amazon.com: B&C 21SW152-8 21-Inch 8 Ohm Neodymium Subwoofer, Black : Everything Else
MVP21 GETSHOW 21 inch Powered Subwoofer Speaker Built-in Amplifier Active professional loudspeaker system _ - AliExpress Mobile
YORKVILLE ES21P 2400 watt Powered Subwoofer | EMI Audio
21″ Sub | Tekton Design
Test Bench: Eminence's NSW6021-6 21” Neodymium Low-Frequency Woofer | audioXpress
FTW-LTE - 21 inch Subwoofer - Mach 5 Audio - the place for bass
Amazon.com: Yorkville ES21P 2400-Watts 21-Inch Powered Subwoofer : Electronics
Death Penalty-21 D1 Incriminator Audio 21" 1500W Dual 1-Ohm Death Penalty Series
US221-4 Dual 21" Direct-Radiating Subwoofer | Fulcrum Acoustic
Yorkville SA221S Synergy Series Dual 21-Inch Subwoofer — Chuck Levin's Washington Music Center
RCF SUB-8005AS Single 21″Active High Power Subwoofer – Sonic Circus
DAS Audio Event-121A Powered 21 inch Subwoofer System
X21P/X21A 21″ Ported Subwoofer (Passive or Amplified) – Seaton Sound, Inc
21" Speaker
Eminence NSW6021-6 21" Professional Neodymium Tour Grade Subwoofer Driver
AccuGroove Whappo Grande Bass 21" Subwoofer – AccuGrooveLLC
VS21 21" Powered Sub - BASSBOSS Powered Loudspeakers
LaVoce SAN214.50 21" Neodymium Subwoofer 8 Ohm
Amazon.com: Sound Town 21” 1000W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-21500A) : Musical Instruments
