Based on our new Subwoofer Room Size Protocol for determining subwoofer room size capability, we went back to our 2010 Subwoofer Shootout and tabulated the data below to see how each model ranked. All of the subs in this shootout earned our Bassaholic certification except the HSU VTF-15H. If an end user is considering the HSU VTF-15H and wishes to reach the 121dB reference level in a very large room, they are advised to purchase two VTF-15H subwoofers. Unfortunately this would make the purchase more costly than any of the other single sub solutions in this comparison. However multiple subs are always a good idea if your objective is to ensure smoother and more consistent bass for every seat in your theater, NOT just the money seat. Discuss "2010 Subwoofer Shootout Room Size Recommendation Comparison" here. Read the article.