I live in Michigan, so the car is in the garage with the top down and the boot on all summer. If the weather isn't good, the car stays in the garage.

I mounted a set of 6 x 9s with the cardboard shells, and they sounded as you would expect...muddy. The sound had to travel through an inch and a half of canvas and vinyl first. These speakers are a much more listenable solution. The subwoofer is fine in the trunk. I'm going to add the divider board behind the rear seat to help dampen resonance, and I've already added a piece of good plush carpet to deaden the trunk space.

I put Infinity Reference 4 x 6s in the kicks...you can hardly hear them. You definitely hear the Blaupunkts loud and clear even doing 80, top down.