Live Sound Small P.A. Package with Subwoofer — Doo Wop Shop
Audio Ace Small Stack - 6.5" Subwoofer dual 4 ohm - GP Car Audio
RCF S 5012 Compact Bass Reflex Subwoofer S5012 B&H Photo Video
Amazon.com: MTX TN8MS Terminator 8 Inch Micro Compact Amplified Subwoofer Enclosure for Small Vehicles with Class A/B Amplifier, Variable Bass Boost, External Bass Control, and Smart Engage Auto Turn On Circuitry :