Kenwood KSC-SW11 – Compact Car Under Seat Subwoofer. There are a few simple steps to install a subwoofer under your seat. Hot Sale 8 inch subwoofer car audio under seat slim woofer speaker subwoofer SPL active power subwoofer. BLAUPUNKT GTHS131 200W 10" CAR Under SEAT Super Slim Powered SUBWOOFER Enclosed BLAUPUNKT ’s story started way back in 1924 when they were a small radio company. This slim fit of under-seat subwoofer can level the volume control and subsonic filter is used to reduce the human ear damage from low frequencies. First wire the power from the battery. Configure the remote activation of the wire so that it starts automatically with the amplifier. Make sure you do not mix up the battery with the fuse box. Here are the best underseat subwoofers and the best low-profile subwoofers available today: Rockville RW10CA (Editor’s Choice) This is a cool looking slim-profile subwoofer which can fit under most seats … Place the device under the seat. Guangzhou Golden Hongfa … Next, connect RCA cables to the back of your sub. So, if you’ve got a small car and … Order) 6 YRS . It offers the bass boost, phase control, and even a crossover filter with a low pass. Being only 3-inch deep, this subwoofer will fit into any tight space; whether it’s under your car seat [driver or passenger], your car’s trunk or even behind the seat in your pickup. Since then, they … US $26.00-$55.00 / Piece 1 Piece (Min.