I plan on making a HT sub using a 15" Brahma D2. I will be wiring the VC's in series for a 4ohm load. I want this sub to be best suited for movies, period! For now it will be powered by a sony 250 watt plate amp, but I will replace it down the road with a 500 watt plate. I have never designed or built a home sub enclosure and wanted oppinions on the type of box and size and tuning of it. Any recomendation/suggestions are aprreciated.