Thanks guys. If you click on my system and view the pic of my current horn sub, you'll have an idea of where I'm coming from. It works wonderfully, but at 42"x42"x22", it's a monster.
I had a 9' sofa sitting on top of it acting as a 22" riser for the second row of my HT. Out of sight it provided not only great bass, but acted as a huge butt-shaker. Now that it's out in the open, my wife says it has to go. Thus my looking at Velodyne and Aerial subs, and my quandary of whether to go with one 18" or two 12".
I had a 9' sofa sitting on top of it acting as a 22" riser for the second row of my HT. Out of sight it provided not only great bass, but acted as a huge butt-shaker. Now that it's out in the open, my wife says it has to go. Thus my looking at Velodyne and Aerial subs, and my quandary of whether to go with one 18" or two 12".