Dissapointed with my new speakers


So a couple of weeks ago I replaced my 2 year old Klipsch RB25 bookshelves with a pair of B&W DM603 S2 floorstanders. When I first auditioned them I fell in love with their resolution and clarity however having lived with them for two weeks now, I am very dissapointed in the low-end and to a much lesser extent, the midrange.

On most songs, the bottom end seems very lacking compared to the Klipsch bookshelves and simply pales in comparison to the Klipsch RF82s we have in the living room. In addition the mid-range seems a little over emphasized. I can probably get used to the mid-range however, the lack of low end impact I probably couldn't get used to. I was thinking about adding a subwoofer but a half-decent one would start around $250 and go up from there and the speakers themselves are worth around $450-500. This got me thinking, maybe I should just switch to a different pair of speakers instead of trying to make the current system sound better. What do you guys suggest?

P.S.-I'm in Hawai'i so while I'm open to used speakers, shipping here will usually run about $250+ for floorstanders so I'd only have about $500 for the speakers.
skyline889
Krell man is correct. The woofers' break-in can be accelerated by facing the cabinets toward one another(closely) and reversing the wires on one's input. This will put them out of phase with each other and cancel some of the sound. Pick some music with a lot of bass, and play it on, "repeat". The ones you heard at the store were broken in already, besides being on a different system. The drivers' suspensions need to limber up on yours, as well as the crossover components needing to burn-in. Hopefully, when all that's over with; your love will have returned.
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.