JBL SUB BassPRO12 450 Watts Amplified 12" Ported Subwoofer Sub Box Built In Amp 50036368308 | eBay
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
LAB SlapBox™ 3.75 ft^3 Ported MDF Enclosure Box for Single JBL W15GTi MkII Subwoofer