Question to those believing in speaker break in

I’m of the camp of just “run em”

Some won’t really change and others come alive.

I had some Jbl 2226h’s that were so dead and dry and slowly came alive (mostly in the bass department).

With subs it depends also. I had Eminence Labs that never changed (not that I wished them too).

Called Eminence and they said there was no need to try and break them in they won’t change! Should’ve called first lolololol

@simna wrote:

How far apart should I put the speakers when placing them front to front and with reverse polarity on one of the speakers?
Somewhere I read 4 inches, but why not as close as you can? Totally together if you can?

A few inches apart should be fine. Try it out and see how much of a difference it makes with regard to their distance and the noise emitted. It doesn't matter in regards to the effect of break-in, that's only a function of how hard and/or long they're driven. Take care though not to work them too hard for extended periods of time, as the noise cancelling effect via the reversed polarity won't give you any real indication of their possible strain.  

Thanks you all.

The speakers are now standing (without grills) completely together, one with reversed polarity,at normal volume (checking the loudest parts of the record before).

Will give them 100 hours. 
There are many different opinions about how many hours they need (Klipsch Heresey IV). Everything from 20 hours to 500 hours (!!!!).
Hope 100 will do.