Best subwoofer to complement my system.

I'd have to agree with Earflappin.

Sub integration for music is not that easy...and very room/speaker placement dependent. Why?...because of all those reflected and standing LF waves from three sources: two speakers and a woofer.

I went for a corner placement for my sub (along the speaker wall and aligned with the speaker baffle edge). This keeps the phase alignment with the speakers and I suspect only works because I have few room resonance problems (large odd shape room and no obvious related multiples in dimensions).

I still needed to use a notch filter in the DSP for the 40Hz mode which was about 6 db too strong but there are no major suckouts with my corner position. I got major suckouts (up to 15 db) when I tried other sub room positions.

In summary, adding the last lower octave may bring a host of problems with it [unless you are willing to renovate or go for extensive acoustic treatments].

Actually, I don't think it's very difficult to implement a subwoofer into a system but it takes a little planning, experimentation with the sub placement, room size, and dialing in the proper configuration for crossover, volume, etc..

Perhaps most important is a little known secret about syncing up a subwoofer to the main speakers. Some to many interconnects and speaker cables (regardless of price) induce time smear to a small or large degree.

Of course the ideal is to acquire ics and scs that induce little or no time smear. To minimize any disjointedness between the main speakers and the subwoofer, it is imperative that the ics and scs apply similar design methodologies.

For example, if the interconnects to the subwoofer induce much time smear but the speaker cables to the main speaker minimize this time smear, the subwoofer will sound syrupy, wooly, ill-defined, slow, etc. whereas the main speakers' bass will be tight, fast, full, well-defined, controlled, etc.. And there is little or nothing that can be done to remove this disjointedness regardless of tuning, tweaking, and placement strategies you apply.

But when I say it's not difficult, every situation and every room is different, and every sub and speaker match is unique. But there are certainly several things you can apply that will minimize your grief.

-IMO

I am also considering the same thing though not sure yet. Apart from the companies mentioned above, you may want to check out Thiel's smart sub.

Thanks for all who responded. Bottom line is I need to do some more research!

Velodyne make the SMS-1 to help integrate a subwoofer [or subwoofers] into a system. I don't own one, but I am intrigued and would really like to try one sometime.