Jldaudio Best Quality With High Spl Huge Motor 500w Car Audio Subwoofer 8inch - Buy 500w Car Audio Subwoofer 8inch,Subwoofer Motor,8 Inch Subwoofer Product on Alibaba.com
JL Audio 10W3v3-4, W3 Series 10" Single 4-Ohm Subwoofer, 500W – AVLeaderz
Melhart Music Center - Yorkville YX18SP Powered Sub 18" 500W