Vibe Black Air 12" Dual 2 Ohm Subwoofer BLACKAIR12D2-V7 - 12v Electronics
Amazon.com: PyleUsa 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs - SBA10A :
VIBE Audio SLICK 12-V2 (SLICK12v2) 12" Single 4 ohm Car Subwoofer