Best subwoofer for a Wilson Puppy


I have now a Puppy 6 and am planning to upgrade to the Wilson puppy 7 + a subwoofer or the Wilson Maxx. But since my room is not to big and I can not finance the Maxx 2 yet I am thinking about buying the WP7 + a good subwoofer.

My slection so far:
1. Wilson Watch Dog
2. Velodyne DD18
3. Revel B15

Which subwoofer will be the best. I know the Wilson will fit the best but it is like 16000 US$ whicle the revel is 5000 US$ and the velodyne 4500 US$. The Velodyne sounds like a good buy but will it work with a Wilson speaker. Will it not be to slow for 2 channel.

I do not play movies and am only interested in a subwoofer for music. Which will be the best choise and who has experience with a good sub for a Watt / Puppy.

Peter
sprbggr
We had the monitor, everything read out perfectly. We did not call Velodyne, as we believed that the unit was designed to only function to crossover from 40 Hz on up (I did not check the high point as it was not relevant to what we wered doing). Many subs do have a low pass limitation of 40 Hz, and I figured this was the case for Velodyne. The unit was new as of a few month ago from an authorized dealer who was supposed to be with us that day, but was unable to make it at the last minute. We did not use the internal analyzer as we have higher resolution equipment to take the measurements and used the manual set-up. Still it shouldn't be limited to 40 Hz in manual and allow something else in an automated mode.
This all very interesting and I have no doubt the velodyne is a great sub, but for integration purposes the Thiel is absolutely great. I would at least check them out before making the move. In one of my systems I added an SS2 to Revel M20s and the integration and soundstage improvement was so dramatic that even my wife commented on the quality.
Sorry, when I said "manual" set-up related to the Vel DD, I meant that there are no analog straps a la REL with which to override the digital display. One accesses the set-up utilities through display menus. If it is not possible to lower the xover point below an indicated 40Hz then you have a problem to discuss with Velodyne tech support.
It seems from reading many threads on Audiogon that outboard sub implementation is always frought with problems. Why not consider purchasing a pair of real full range speakers if you feel that last half octave is worthwhile? Rives has demonstrated that your speakers can reproduce below 30 hz. If you are in fact getting all of that now, there isn't much you are missing. Perhaps you need to consider whether or not your room is delivering all of what the WP-7 provides.
I have equalized bass from a full range speaker with audible signal below 20 hz. If I cut it off at 30 hz, I experience insignificant loss.
One further thought, I own a pair of Cabasse Saturn A21 subs which use a 1250 watt amp, provide for equalization and phase adjustment, etc. As this is a French company, it should be available in your market and is the best subwoofer that I have ever heard.