DS18 EXL-XX15.2DHE 4,000W Max Dual 2-ohm 15" Subwoofer
Amazon.com: Gravity Car Vehicle Subwoofer Audio Speaker - 15 Inch Competition Grade Pressed Paper Cone, 2 Ohm DVC, Advanced Air Flow, 4800W Power for Stereo Sound System Warzone G715D2 (1 Subwoofer) : Electronics
Universal Car Stereo Vented Port Single 15" Kicker Comp C15 Sub Box - 4 Ohm - Walmart.com
15 Inch Car Subwoofer MMATS Juggernaut Car Subwoofer
Amazon.com: Bbox Single Sealed 15 Inch Subwoofer Enclosure - Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics
Amazon.com: Pair of Gravity 15 Inches Car Audio Subwoofer 3200 Watts Peak Power (1600x2) RMS Power 80 Watts Each with Dual Voice Configuration 4 Ohm Power (2 Woofers) : Electronics
Discontinued Obsolete SKU | MTX Audio - Serious About Sound®
Amazon.com: NVX VCW154v3 15" 3000 Watt Peak (1500W RMS) Dual 4-Ohm VC-Series Car Subwoofer (VCW154 Version 3) : Electronics