R/T 300 Enclosure Series (318-15 Rockford) - Single 15" Slot Vented Sub Bass Hatchback Speaker Box with Labyrinth Power Port for Rockford Fosgate Subs
I putt a Audiobahn 15 in this and it sounds very nice i have always used round ports so i was skeptical on using a slot port like this but it sounds very nice and it hits the low frequencies too. The labyrinth port does its job. I highly recommend this box.