Skerdi,
Congrats on the new arrivals. Pictures are a must now... so that the rest of us can enjoy, too.
As far as the break-in goes. Who cares whether its the 6 inches of woofer that are breaking in or the 6 inches of gray matter between your ears that are breaking in. I think that you're used to hearing a "muddled" high frequency response and a pronounced mid-bass with the JBLs. That "speaker memory" will fade as you listen to the M60's over time, and you'll begin to get used to the speakers more as time goes on.
In addition, don't forget how close we were sitting when listening (around 8 feet). Your listening distance might be different.
In regard to the bass, that likely is the difference in your Rotel gear compared to my Panny/Yamaha combo (even though the DACs in the Yammy were doing the heavy lifting because of the optical connection). The Rotel might be accentuating the bass and high frequencies more than mine did. Try trimming these values (if you can) with your receiver or your CD-P.
In any event. I'm really happy that you're really happy. Keep us informed.
