I don't think so...there's some people that have had speakers for a loooonnnnggg time....they don't just fall to pieces one day. People don't just say "Oh well, they're in pieces now...better get new ones."

In reply to:

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To break speakers in quickly, play heavy bass music for a few hours.

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This is entirely in line with what Ian has stated. "Axiom" may have been conservative in saying "a few hours." He/she didn't say 10's and 100's of hours, and that's the point.

I was just reading the Music Direct paper catalog -- my brother recently ordered a CD from them. If you order cables from them, you can ask them to burn them in for you on their cable burn-in machine. It's a free service!!

HAL, who is poster "axiom"?

HAL-It was a voice from above.

Hey, Are any of you people in the Axiom Building right now?

Don't we wish!

In it, heck, we can't even find it!

Shhhhh!!!!!

I'm peeking out of the broom closet right now...

It is not uncommon for something to require a break in period, but not actually break down.. Take the guitar.. The top surface, with the sound hole, does break in over time.. (And sounds better as it does) It does not break down though..
The fine layer of wood actually flexes with the vibrations caused by the sound waves.. This flexing works on the grain in the wood, and in time, the sound will mellow.. A desirable effect.. This can be applied to most all wooden string instruments..
A guitar sitting in a case, even it was 100 years old, has not aged.. Its just an OLD guitar..
This process will continue the entire life of the instrument, as long as it is played.. It does not damage it..
I don't have the figures on the number of vibrations per second on this, but you all get the idea..

Mikey,

That's the best analogy in support of break-in I have heard to date.