Is there a specialized recessed type HT connection box that I can recess into a wooden floor next to my sub woofer for it's power and signal connections?? It's in the middle of a very large room and I don't want to string wires across the floor. Big enough for a double duplex in there for AC plus room for the sub signal jack and maybe phone or cat5 as well. I've looked at electrical sites and only one, a pop-up style half way appealed to me. Is there a HT style most 'in the know' builders like to use that us newbies wouldn't know about?? Appreciate a tip or two.