I don't want to put the amp in the horn, but I'm building this for a friend and that's where he would like it.
I built him a ported box with a Shiva and a 500 watt plate amp a while back, but He has been using my Mal-X with his plate amp for the past 2 years. Now that I have settled into my new home, and have my theater almost done, I want my sub back. After using my sub for 2 years, he doesn't want to go back to his Shiva. I told him I could probably build him something with a little more output for not a lot of money. F-20 it is.
The amp would be on the back panel, bigger area of the horn. But I also don't have a problem figuring something else out. I'd rather build it right than convenient.