Kicker Charcoal KMF124 12" Marine Free-Air Subwoofer Bass Kit with KXM4002 Amplifier 400 Watt at 4 Ohm - Creative Audio
Thoughts on old Kicker free-air sub in my hatchback | DiyMobileAudio.com Car Stereo Forum
Amazon.com: High-Powered Free Air Subwoofer - Impressive Bass Response, Low-Resonance Frequency Output, and Power Handling: 300 Watt PEAK / 150 Watt RMS with Car Subwoofer Size: 12.0 inch - Lanzar DCTOA124 : Electronics
Kicker f15a old school free-air subs USA MADE | eBay