Kicker 49PTRTP10 Low-profile down-firing 400-watt powered enclosure with CompRT® 10" shallow-mount subwoofer and passive radiator at Crutchfield
Crunch Crw12d4 12 Inch 800 Watt Max 400 Watt Rms 4 Ohm Dual Voice Coil Car Audio Subwoofer Speaker With Spade Terminals For Sealed Or Vented Enclosure : Target
Rogue Car Audio Vandal 6.5 – 400 WATT 6.5 inch Subwoofer – Droppin HZ Car Audio
Memphis Audio 10" Subwoofer 400 Watt Dual 4 Ohm Street Reference Serie – Robidoux Inc
12" 400 Watt Space Series Low-Profile Subwoofer
EXL-X 6.5" Subwoofer 400 Watts Rms DVC 4-Ohms
10" 400 Watt Space Series Low-Profile Subwoofer
I KEY BUY 202mm 8 Inch Car Subwoofer 400W 4 Ohm Big Red Foam Edge Surround for Audio System Modified DIY Bass Woofer - AliExpress
Amazon.com: DS18 SRW10.4 10" Shallow Car Subwoofer - 400 Watts, Single Voice Coil, 4 Ohms (1 Speaker) : Electronics
MTX TN12-02 12 400 Watt Sub Woofer Car Audio Power Bass Subwoofer TN1202, 1 Piece - King Soopers