The sound probally won't be acceptable. The only sound waves that you can punch through obstructions is bass. Midrange and higher are absorbed rather easilly. The upper range is so fragile that air absorbs the sound so much that tweeters must be directional, meaning aligned with the ear, to get quality sound, the reason I selected the top of the panels for the tweeters. (Before I did the chop, I mocked assembled to experment with sound quality as to where the tweeter were placed. I thought about trying to wedge then into the inside garnish mouldings on the posts, but I couldn't get the sound to hit dead between the ears, without mounting them at different angles, and it would have looke like hell.)

I agree that it would look nice, but you'll be compromising the quality of sound.