Amazon.com: PyleUsa 8" Dual Subwoofer Box System - 400-Watt Slim Mount Truck Audio Subwoofer Box - Rear Vented Design with Built-in Illuminating LED Lights, 2x400 Watts Max Power : Electronics
Rockville APM10B 10" 400 Watt Powered Home Theater Subwoofer Sub - Studio Sound
EXL-X 6.5" Subwoofer 400 Watts Rms DVC 2-Ohms
Rogue Car Audio Vandal 6.5 – 400 WATT 6.5 inch Subwoofer – Droppin HZ Car Audio
Ultra Audio LV 8" 400 Watt Car Audio Subwoofer 800 Watts Max 4 Ohm USA Made | eBay
Audiobahn AWC10 12” 400 watt Subwoofer Works READ | eBay
400 watts Bumper Subwoofer(s) 12" USA; each BIN = 1 sub | eBay
55 Series 10" 2Ω Dual Voice Coil Subwoofer | MTX - Serious About Sound®
I KEY BUY 202mm 8 Inch Car Subwoofer 400W 4 Ohm Big Red Foam Edge Surround for Audio System Modified DIY Bass Woofer - AliExpress
Memphis Audio 10" Subwoofer 400 Watt Dual 4 Ohm Street Reference Serie – Pricedrightsales
EXL-X 6.5" Subwoofer 400 Watts Rms DVC 4-Ohms
6.5" NITRO SERIES SUBWOOFER 400 WMAX/200 WRMS DUAL COIL 4 OHM VOICE CO – GENIUS AUDIO USA
12" 400 Watt Space Series Low-Profile Subwoofer
Memphis Audio 10" Subwoofer 400 Watt Dual 4 Ohm Street Reference Serie – Robidoux Inc
Toro Audio Fierce 8 Inch Car Subwoofer | 8 Inch Subwoofer | 400 Watts RMS – TORO AUDIO
Amazon.com: Skar Audio EVL-65 D4 6.5" 400 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics