B&W 803D or Dynaudio C2's

The M series are more of a pro audio monitor. I actually use quite a bit of their pro line in my studio. (Air 20's, BM15A's) I love them, but they are not in the audiophile communities eyes a "listening" speaker. I work on them because they are acurate and can tell me the mistakes that I make in my mixes, and are also fun to listen to music, but I dont think I would throw them in my home theater or two channel system. The ones in the classified are far field monitors and are fantastic.

both are good. the b&w 803 by a nose.

The C2 hands down over the B&W's. However, as good as the C2 is, I would opt for the lesser priced Contour S5.4 over it. To my ears the S5.4 is still the best speaker I've heard under $10K when it's adequately powered and setup correctly. The only other speaker I like as well is the Aerial Acoustics Model 9, which is also a phenominal speaker.

I own a pair of C2's. I've never seriously listened to a pair of B&W's, the 803D or otherwise, so I can't add anything to the "which is better" question.

I had my C2's in a 14x18x8 room until recently. I have a Velodyne DD-15 which I sometimes use, sometimes don't. In that room, the bass of the C2's is very satisfying - I could easily imagine a speaker with a deeper low end overpowering a room of that size.

I recently had the opportunity to move the C2's to my LR, which is more like 20x40 and opens to the rest of the house. It is still an extremely satisfying speaker in this environment, but as I listen to mostly rock, blues and jazz, I do plan on experimenting with speakers with a deeper low-end, possibly higher in the Dynaudio line, possibly another manufacturer.

Dyn's always take a little volume before they come "alive" - they're pleasant sounding at low levels, but they really come into their own at medium and louder volumes. This is somewhat less the case in their current models than some of their older models, but it's still the case IMO.

That said, at medium and louder levels, even in the new environment, the C2's have a substantial low end that is tuneful and satisfying. Like any self respecting audio geek, I'd love to get it even "better".

Again, I can't compare it to the 803D's.