Velodyne DD: 10 or 12?

Kck, Actually I may have mis-lead you in first response. I would consider 2 10s in lieu of the 12. The reason is I think that 2 subs would sound better. I have heard in some demo's at different dealers using 2 subs. And I feel that there is a better distribution and representation of the music. I have come to the conclusion that 2 subs interact with each other and the room and somehow tighten up the bass. With the Velodyne setup capabilities in the DD series, you can flatten the curve even more that with one.
If you haven't tried the DD yet and had a chance to play with the setup menu in your room, you should, cuz the demo is what made me order one. And also you mention stereo subs. Actually I would daisy chain them in mono. As far as not trying or buying. No haven't tried it my home yet, only heard them in the dealers showroom. And buying them well that is a good 3000-3500 dollars away. And you also mentioned the capability of the 10 working in my room. I don't know, I never tried it. I know the 15 would be over kill. But I can't give you an honest answer there Kck. I really don't think it would , in my opinion anyway. Really depends on your room you may get by with it. But I'd rather have too much than too little.

Two 10s should be better than one 12. But when only going for one, I would go with the 12. You can always turn down the bass or Eq it to your room. Besides you may also add another 12 at some point or move to a larger room.

Thanks everyone. I think I am almost ready to pull the trigger on the DD12. I do have one question though... I ran a frequency sweep of my speakers with the REL off. While I did not record the results exactly, the things that stood out were:
1) Bump of 4-6 db between 80-95 hz
2) Small dip in the mid-to high 100s... maybe 170 hz? Do not remember and I cannot confirm right now.
3) Rapid rolloff from 55 hz down, to about 6 db down at 40, pretty much nothing there after 37 hz.

Also, I am running an integrated with a subwoofer out feature, which is placed AFTER the volume control (so the SW follows the amps volume). With the REL, I have been using the high-level (Neutrik) connections out of the amp's speaker posts so I have not had to worry about any of this.

Given the points above, is the DD still the way to go to correct all the bumps and dips, and will it do all it is made to do using the connections I have now? As you can tell, I am a bit illiterate when it comes to advanced SW connections, not having had to do so for a while. I am not a technophobe, and am sure I could learn how to set it up, so that is not an issue. But I just want to be sure, before laying out cash, that I can realize the full potential of this impressively-spec'd machine.
BTW, I will be using the sub in a strictly music-only, 2-channel system... does that change any of the answers above or any to come? Sorry, should have stated that earlier. I do like the individual settings feature, so I can use a different one for rock, classical, etc.

Hi, just giving this a little bump... would love to get some answers to my latest set of questions above. Thanks much.

Kck - I am a velodyne DD15 owner. Buy the DD12. It is exactly what you need. The DD15 enabled me to put a band aid over my room's major problems and enabled me to listen to music without being constantly distracted by boomy bass.