I have a pair of Monitor 60 series II's and a HK 3480. When I put my ear right next to the top speaker, separating out the sound from the tweeter with my hand, it seems like the speakers play progressively lower frequencies as I go down the towers. Is this just in my head or are there crossovers for each of the speakers in the towers? Also, I was curious and stuck my phone inside the port and took a picture facing up into the tower and found a separation between the bottom speaker and the rest of them. Here's the picture, http://i.imgur.com/Dnnad52.jpg I looked for a cabinet design, like a cutout, so I could see what the inside looks like. Anyone know of one?