LAB SlapBox+™ x JL Audio 8-Inch "Active" Subwoofer System with Built-In Amplifier in Ported Enclosure Optimized vented box with integrated class D amp & 8" JL Audio W3v3 subwoofer
Alpine PWE-S8 at Onlinecarstereo.com
Fluid Audio F8S 8-Inch Powered Studio Subwoofer | PSSL ProSound and Stage Lighting
Edifier T5 Powered Subwoofer Active Woofer - 8 inch Driver and Low Pass Filter | eBay
Audison APBX 8 AS2 Prima Series 8" Active Sub Box with Dynamic Bass Tracking - Creative Audio
Amazon.com: Audioengine S8 Powered Subwoofer Speaker - 250W 8-inch Home Subwoofer with Built-in Amplifier and Dual Audio Inputs for Home Speaker System (Black) : Electronics
BAS8 - 8" 400 Watts RMS Class D Powered Subwoofer in Ported Enclosure,
Nakamichi NM-NBF8.1A Under-Seat Active Subwoofer with Remote (8-Inch, 1,500 Watts Max) - Walmart.com
PreSonus Eris Sub 8 8-inch Powered Studio Subwoofer | Sweetwater
BAS8 - 8" 400 Watts RMS Class D Powered Subwoofer in Ported Enclosure,
Alpine PWE-S8 Compact 120-watt powered 8" subwoofer at Crutchfield
Source 8 inch 10 inch Active Subwoofer with Passive Radiator on m.alibaba.com
Amazon.com: Monoprice 60-Watt Powered Subwoofer - 8 Inch With Auto-On Function, For Studio And Home Theater Black : Everything Else