Burning in period Nautilus 800?

B&W replaced all the units of my 800's. The mid/high freq is allright now, but the low freq are a little bit laid back. How long will it take for the big units to be broken in?
I would guess at 60 days of 24/7 and a whole lot longer if one doesn't do the 24/7--- and ---I'm prety sure more will be had beyond that 60 day period.
B&W Drivers should need only a few minutes or maximum of a few hours. If it still sounds different after a week then your old drivers may have been damaged/over driven or something is wrong (for example did you make sure that the seal is airtight around the new drivers that you installed?).

I'd stay away from suspect products that claim extremely extensive break-in periods, as this is indicative of poor design, poor choice of unstable materials or poor manufacturing tolerances. The parts that most flex in a good driver (surround and spider) are specifically designed to have as minimal effect as possible on the sound you hear.
Avguygeorge is correct. The rate of break-in will also of course depend upon what you choose to break them in with. A break-in track will be more efficient, but intolerable if you are within earshot of the speakers.

I have been living in apartments in large cities for the last fifteen years, and when I buy something for my stereo, I always yearn for a big house with a garage where I could stick speakers or components for unbridled, 24/7 break-in.
All the drivers are brand new. The low (4), the mid and high units are all replaced. It sounds a lot better than a week ago, only I miss the power in the low freq. I was wondering if people who got the 800's brand new how long it took for before the 800's where broken in. Especially the drivers of the low freq.
Hi, I can't speak for the physical parts. but new drivers have new wiring. All of the conductive metals need to be broken in like an interconnect. So figure minimum of 100 hours like a new I.C.
Mids and Tweeters do break in quicker than woofers. I've heard it many many times.. Crossover parts however, take a VERY long time to break in.. a solid 3mo + for capacitors.

To properly break in a woofer you must play the speaker with program material which contains a fair amount of bass content (obviously) and after warming up the speakers play them a fairly high level for extended periods. Preferably when you go to work. The woofers should be ready in about 400-800 hrs.

After breaking in over 40-50 new pairs of speakers, including some DIY projects, this has been my experience..

I'm not kidding either..

Hope this helps.
Thanks for all the information so far. The wires inside are all the same and also the crossover and capacitors.

By your own estimates, you appear to have spent between two and five years breaking in speaker woofers (assuming that you always have one pair of the 40 to 50 speakers being broken-in continuously, 24/7)

Since you have found that crossover capacitors take three or more times longer than woofers to break in, I began wondering how often you actually get to hear the equipment AFTER break-in?

Wow....that's dedication! Or are you pulling our legs?