Dissapointed with my new speakers

Not sure how long B&W's take to break in but my Dynaudio C1's did sound great out of the box but after 100 hrs they were just horrible. That being said after 200 hrs they were acceptable and at 400 hrs they were great. I did burn mine in 24/7 until I hit 450 hrs.

Thanks for the advice guys. I actually purchased them locally and they were used for a year by the owner I bought them from, and were demos before that, so they must be broken in by now right? He had them running off of an old Rotel CD player and an older Rotel integrated. I'm running them off of my Denon PMA-2000IVR integrated. It's a warmer high current SS amp so I was surprised at how little mid-low bass there was.

You'd certainly think so, wouldn't you? Are they in the same room as the Klipsch system(living room)? Perhaps they are sensitive to their placement in the room? Have you tried moving them, with relation to the room boundaries? If they are in a different room; that one may have a null(or more than one) at the freq(s) you are missing.

Make sure you have them wired correctly. If they are out-of-phase, the bass response will be weak.

07-10-09: Skyline889
I'm running them off of my Denon PMA-2000IVR integrated. It's a warmer high current SS amp so I was surprised at how little mid-low bass there was.

That should be a good amp/speaker match. That Denon is a big, heavy class A integrated with huge current reserves and the B&w has a pretty friendly impedance curve and its sensitivity is around 89 dB.

Also, the DM603 S2 was discontinued years ago, Stereophile reviewed the S3 in 2005, and the reviews of the S2 on Audioreview go back ten years. So it's definitely not a break-in problem.

So I suspect it's a room placement, spiking, or cabling problem, or a bit of all three. First thing to do is check to see if your speaker cables are wired out of phase to the speakers. That would easily account for why a floorstander known for dipping into the 30's has less bass than some Klipsch bookshelves.

Second, perhaps the cable itself is a mismatch and you need a very low gauge feed to the woofer terminals.

Third, maybe one or both of the woofers are blown. This is a 2-1/2 way system, which means it's a 2-way that gets augmented by the second woofer from about 450 Hz on down. If the woofers are blown, the mid/woofers still work but would have much weaker bass than when the lower woofers are helping out. This could also account for the bad tonal balance you're hearing.

Fourth, make sure the speakers are making contact through all the spikes or cones to the floor below. If you have hardwood floors, use cones (or spikes) plus floorsavers.

If all those things are OK, then you need to experiment with in-room placement. There may be some cancellations going on with the speakers in their current positions. How does their position compare with what you had for the Klipsch's?