Slipstream Port Technology for Massive and Cleaner Bass: Small enclosures require long ports to offer decent low-frequency performance. The unique port design of new Club enclosures efficiently limits the resulting air turbulence within the port. Wedge Box with Rounded Corner Design: Club enclosures are designed in wedge box type with rounded corner which allows for flexible placement direction to get best performance and maximize the space in vehicle. Removable Logo Badge for Flexible Placement: Club enclosures are designed with a removable logo badge so you can put anywhere you like.