JBL IRX115S 15" Powered Subwoofer Black JBL-IRX115S-NA - Best Buy
New JBL® Aftermarket Subwoofers Offer Deep Accurate Bass for Drivers | HARMAN
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Amazon.com: JBL SUBBP12AM - 450 Watts (150W RMS) 12” Amplified 12 in. Ported Subwoofer with Sub Level Control and Distortion Free Bass with Gravity Magnet Phone Holder Bundle : Electronics