Lanzar OPTI1533D Optidrive 15-Inch High Power Dual Voice Subwoofer Review - YouTube
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Lanzar OPTI1222D 12" Dual 2 Ohms Optidrive Series Car Subwoofer
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Lanzar Optidrive 1535D. Never powered or mounted | Car Audio Forum | CarAudio.com
Lanzar 15in Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Stamped Plastic Basket, Dual 4 Ohm Impedance, 2000 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP154D : Everything Else - Amazon.com