Don't know if this works, but the idea is to "break" the continuous baffle surface around the VP150. So, how about inserting some kind of spacer below the speaker so that it is separated from the top of the screen by 1 ft or so (having an empty space below). As usual, you can always tilt it down so that the tweeters aim directly to the listening position. I guess you can experiment using a stack of books or something...