lilmike- I'm considering building your T-6, but I'm thinking that something taller and thinner would look nicer in my living room. A tall black monolith might look pretty classy. I'm not looking for monster output; just something with usable output down to about 30.
I did come across a single fold tapped horn project by BigMouthDC using four 6.5" Anarchy drivers. Final dims were 9" x 12" x 91". I little taller than I was thinking, but quite a bit narrower. From reading through the Exodus 25Hz project thread, it sounds like the drivers need very little power to drive. Would I be able to get away with an old Harmon Kardon 60W per channel AVR in direct mode to drive the four? This would substancially lower my cost since I wouldn't have to budget for an amp. Then again, the four drivers would be about $250... A single 10" like the Alpine that you mentioned in the T-6 thread would be quite a bit cheaper.
Edit: Ah crap- now that I have a catchy name for this project, I'm going to have to move forward with this
. It will be a 2001 tribute: TMA-1 Monolith
12" x 18" x ?
I've got lots of learning to do...Edited by tampa frank - 6/19/13 at 12:50pm