Gofaststang, I noticed very little break-in period. This would coincide with Audience's literature on the speaker cables stating an initial 4 hours (I believe) break-in period followed by a complete break-in period of 50 hours.
Perhaps you are experiencing an amplifier/cable synergy issue as I discussed in my first post.
With my first amp with these cables, a McCormack DNA-2 Limited Anniversary Edition, I noticed a tremendous tighening up of the bass regions, kettle drums sounding uncannily dynamic and real, but overall the bass regions sounded somewhat light. I believe because the lack of time smear and because we are accustomed to hearing that time-smear.
However, within weeks, I installed a McCormack DNA-2 Revision A amplifier, (an almost complete rebuild by Steve McCormack with what are supposed to be some of the best aftermarket parts available) and the bass now provides a full, extremely tight, blooming, bass with a viscerally deep and solid punch like I've never heard before.
In other words, whatever bass I perceived disappeared with the Au24 speaker cables with my first amp, came back and in spades with the second amp.
Also, I was bi-wiring with my previous cables. Once I installed the Au24's, I no longer had the desire to bi-wire.
However, at this moment, I am bi-wiring with the Au24's for the bass, and some very highly rated cables for the mids/highs. (I'm burning in these other cables)
I perceive no advantage at this time with this temporary bi-wire config. But it's the only way for me to continue to listen to the excellent bass of the Au24's, while going thru an extended period of time burning in these other cables.
-IMO