my living room is on the small side but I want to build this bass horn anyways. the wife want like this at all. here's a suggestion... there's a large vent in the floor where an old heater used to be. I used to do hvac, I know it will be hell to get that heater out from under the house. if I do... there will be a perfect place to mount a sub. I know I could a large IB but I want the F20. can you mount a bass horn under the house and have the mouth face up through the floor? please tell me you can and it actually perform well.