Active 10" Car Audio Subwoofer Tube Speaker 500W Enclosure 4 Ohm with Rear Vent | eBay
KICKER TB 8" Compact Subwoofer - AudioWorks of Delaware | Turn It On! | Car Alarms - Remote Starters - Audio Systems - Navigation Systems - Multimedia Systems - Custom Car Rims & Tires - On-site Company Fleet Services
8 Inch Passive Subwoofer Tube Speaker - 400 Watt Car Audio Subwoofer 4 Ohm | eBay