Amazon.com: MB Quart RW-108A 600W Reference Series 8" Slim Low Profile Compact Under-Seat 4-Ohm Active Powered Subwoofer Enclosure with Built in Amplifier for Car Boat RV ATV : Electronics
Amazon.com: Yamaha 10" 100W Powered Subwoofer - Black (NS-SW100BL)
Amazon.com: Audiopipe 10" Active Enclosed Low Profile Subwoofer System 300 Watts Max/150 Watts RMS Dual 2 Ohm : Electronics
Amazon.com: MTX TN8MS Terminator 8 Inch Micro Compact Amplified Subwoofer Enclosure for Small Vehicles with Class A/B Amplifier, Variable Bass Boost, External Bass Control, and Smart Engage Auto Turn On Circuitry :
Amazon.com: 8" 600W Active Under Seat Car Sub Woofer Stereo Power Amplifier Enclosure Speaker : Electronics
JBL BassPro 12 Active Subwoofer Car Set - Bass Reflex Woofer JBL Box Large 30 cm, 450 Watt Amplifier Car Sound System and Car Hi-Fi Bass Box Housing, Black : Amazon.de: Electronics & Photo
Amazon.com: Nakamichi NBF08A 8" Compact Car 3-Way 80W Active Subwoofer With Built In Amplifier : Electronics
Amazon.com: Powered Subwoofer, Bestisan 6.5" Active Home Audio Subwoofer in Compact Design,LFE & Stereo Line Inputs & Audio Output, Built-in Amplifier for Home Theater/Receiver/TV/Speakers, Black, SW65D : Everything Else
Amazon.com: Gravity Warzone WZ10US 10" Pro Audio Active Compact Spare Tire Slim Aluminum 1000 Watts 2 Ohm Subwoofer Powerful Loud Speaker with Bass Volume Control Knob : Electronics