How about this for a sub?

[myriad1973]

It's not exactly a HT sub, but it sure would be fun nonetheless....

http://www.newegg.com/Product/Product.aspx?Item=N82E16882014005

 

[njedpx3]

Hard to beat an SVS Ultra or a JL Aduio Gotham or Fathom. I know Cerwin Vega is a wlle known speaker manufacture, but I have never hear their sub, even though 21" is gigantic. I am not sure how it would compare with the sub leader