You really should get some subs for running this kind of gear outdoors. Look around, there are plenty of them that will work for you. Some are DIY boxes. As for Smaart, it's a measurement system that helps you setup systems to make them sound best. Check it out at the link.There's a forum here on AudioRoundTable.com for Prosound Speakers that you might be interested in. That's where we usually have discussions about equipment like this. We host an annual Prosound Shootout, where we measure subwoofers at a large open field, at a race track. This year, it will be co-sponsored by ProsoundWeb.com.