Yea me too TC as far as the front loaded front horn, but DANG the size is just too much. I have a design for a front loaded/rear loaded with the front upper horn tuned for=> 200 hz and the lower front firing horn tuned for 50 hz to 200hz.I was using the parameters of the 206e driver , but as stated it is still too big for my taste.Horns gotta be BIG (IMHO) to do what they do.My present 206e horns work good in a smaller to medium size room , but i wouldnt put them in a large room. One of the drawbacks i have heard in the front horns is a very tiny sweet spot and i think that is another reason that has kinda kept me from building. ron