Most Musical Subwoofers?

I guess I have to play devils advocate here and state that the B&W ASW 850 is the best I have heard so far for music and movies. I have it seamlessly integrated in my all tube system and the sub is located on the right side of the right speaker facing towards the same plain across the linear path of both speakers. In all of my measuring and experimentation this is where it sounds best.

Now I am ready to take the plunge and get another one to play around with and see how much better I could make the music experience. But one 15" sub sure does fill my room pretty good already when I need it to jam for rock music, I hate to see how two 15"s will do. For other types of music, the sub is omnipresent without a hint of its existence, except for deep bass energy when I switch off the sub EQ, Velodyne SMS1 and realize that a song had some more energy associated with it, but it is minimal in nature and the sounfield is more alive and vibrant with the sub in action.
Ciao,
Audioquest4life

So I know I want a pair of subs, I'm leaning toward JL Audio, what do you use for a high pass filter, since most subs only come with a low pass filter? From everything I've read, just using a low pass filter and trying to blend the sub with the mains, sounds problematic.

It seems like the Velodyne SMS-1 might be a good choice.
Would I need two for stereo subs? How good is its circuitry? I'll also post this question separatly.

I have not heard the JLs, but I still am amazed by my pair of Vandersteen 2Wq subs. Musical, powerful, and clean bass, and they have blended seemlessly with both Vandersteen mains and my new Ohm Walsh mains. Probably my most satisfying hifi purchase to date.

another vote for the Thiel sub

Sgr,

The SMS1 will take over all functions of the subwoofer and you will be free to experiment with it as you wish. You can let the SMS1 do its own analysis for a starting point and play around from there. The lowpass crossover frequency is adjustable from 15-199 herz. More than enough ajustability for most installations. You can daisy chain up to three subs to the SMS1 with all receiving the same processed signal or you can add multiple SMS1's in another type of daisy chain configuration with each sub getting their own equalized signal.

On the subwoofer itself, all subwoofer settings for EQ must be turned off or bypassed. The same for phase and contour settings. You will need to have the volume about 1/3 up to allow you to play with settings and make comparisons. The SMS1 will allow you to tweak like crazy. It is really easy to use and integrate, at least in my system, so YMMV.
Ciao,
Audioquest4life