Originally Posted by mailiang
But I wasn't comparing the HSU to other ID subs was I?
You disagreed with what I said originally. Perhaps my fault for the quick and dirty phone post, but I've just been clarifying what I said initially. Let me make it clearer:
Whether a sub is good or not does
depend on its price because there is always a better sub at a higher price. It doesn't matter--ID or retail speaker company subs. Pretty much any sub has a price point where it is a good value, and one where it is not. At $2,000, the VTF-15H would not be a good sub because there are better options. The Energy ESW-C10 on sale at Newegg for $149 this weekend is a good sub because it's a good value, even though it normally is not.
Granted, this is a very general evaluation since the Energy ESW-C10 would probably not be better than the BIC F12 for a large room for mainly HT usage. But at that price, it has characteristics that make it a very good value for specific needs. At full retail, no, because there are other, cheaper subs that provide a better performance value.