Prestige and I chatted about this. The Mac has it's own fans, and if they decide the cover needs help with circulation they will fit fans in the side of the box to draw air in. It's going back next week for the sub, so I'm sure they'll figure it out then. It's sounds nice, but it's lacking a little something (ie: the subwoofer). Imaging is good though. Right out of the dash vents!