GLADEN RS12 FREE AIR 12" 400W RMS 4-OHM SUBWOOFER CLEAN BASS SPEAKER CAR AUDIO | eBay
I have these 2 kicker free air subs. I was under the impression that these are meant to be run without a box but after hearing I don't think that is the
Kicker 45kmf102 10" Weather-proof Subwoofer For Freeair Applications 2 Ohm- Kicker 45kmg10w 10" Led Grille (white) : Target
Kicker KMF10 10-inch Marine Grade Free Air Subwoofers – Sounds Good Stereo Online