JBL Professional - The new JBL VTX B28 subwoofer delivers uncompromised low-frequency performance to all of your live audio applications—bringing legendary JBL sound to every deployment. Learn more about VTX B28: https://bddy.me/3529Skt #
JBL SRX828SP Dual 18" Powered Subwoofer | Guitar Center
Amazon.com: JBL Professional PRX418S Compact Passive Subwoofer, 18-Inch, Black : Electronics