Heard the B&W N804d3s ...

I have the N802's bought new in 2004.
1. I personally feel my N802's appearance looks better than the   
    current 802's. I'm not just saying this, they really look better.
    They way those lower 8 inch drivers stick out like they do
      looks awful.
 
2. I really don't care what anybody says but the mid-range and highs
     on mine sound better
3. Yes, there is more bass on the current 802's but it's just too much.
     The bass on mine are lean as most people say but it is much
      tighter and I prefer a tighter bass to excessive bass any day.
       I only want bass to be reproduced when there is bass and that
       is what my N802's do. I don't want bass coming out when
       there is no bass in the music.
4.  Are the current 802's worth the extra money over the older N802's
      ??? LOL   Absolutely not.
 5.  Find an older pair of N802's or N801's in very good condition
      or better and save some major bucks. Use the savings and buy
      more music.

A used pair of 805's have been what I really want to use, but many on here have talked about the Ascend Sierra 2.  There are a fair number of good choices in sub $2000 range.

Now if life would just quit getting in the way with medical bills and car breakdowns :)

@knownothing ... I agree with you that the N804s are basically monitors with built-in stands. The purpose of the sub in this application is not to get the lowest bass possible, but simply to embellish the existing bass slightly. For my very small room with space limitations, the L12 should be quite sufficient, both cone-wise and size-wise ... Enrico, from Rhythmik, agrees with this. After I get the L12 set up and integrated, I’ll post the results. If this doesn't work, I likely will keep the sub, sell the N804s, and purchase stand-mounted speakers. My fingers are crossed.

Just never spend more than you can easily afford. I have heard better speakers, but my trusty old 803's with subs keep me happy enough. If I wanted to have ecstatic listening experiences. I would go see Jethro Tull, Alice Cooper, Pink floyd, Heifitz, Oscars Peterson, etc. OH, I DID! 

rlb61, 

I cannot say if the bass above 25 or 30 Hz is noticeably better represented on the F12 than the L12's, as I was going to try them but went a different direction. They are both well regarded by users.  I did try two smaller sealed SVS subs in a room about twice the size of your listening space to match with some Monitor Audio stand mounts, and sent them back as they just didn't have the sound quality I was looking for.  I replaced with B&W PV1D and and extremely happy with that. I own a PSB sub in another system that lists for more than the speakers and find it very musical. YMMV.

The L12 may do the trick with the 804's, but there are good reasons to buy a high quality sub beyond it's low frequency capability, not the least of which being speed, tone, and integration with your speaker's bass drivers. No matter what, I recommend a decent sound level meter and some analysis software to help you tune your sub to your speakers and your room.  Enjoy.

kn