Second the Vandersteen (full disclosure, I'm currently selling a 2Wq but ONLY because I replaced with Vandersteen 5s which have built-in subs). You do need to have separate pre- and power-amplification in order to place the crossover between the two, but this sub is built specifically for speed and tunefulness. You can tune the Q (hence the "q" in the model designator) for your space and taste. These subs just get it right--used mine in conjunction with Magnepan 1.6QRs and it was a killer combo.
