No rear deck, but in the front of the trunk is a solid metal separation to the rest of the cabin. The area where the top retracts into. An old Toyota convertible I once owned had just a vinyl barrier. This metal must add structure to body. So now the trunk is sealed from the rest of the cabin. Thinking there might be some opening on side of seats to put a kind of channel for the sound. Figure I'll just live with it. The bass vibrates trough the cabin, so I can feel it anyway.