Just went digging on the Bose site for info.. not much there.. in fact in their FAQ there is a question that asks " can I get specifications for the system in my vehicle" and the answer is " No, because we custom engineer each system etc..bla bla bla" ..
So, I did send them an email, not asking for specs, but if there was any changes made to "the system" from the 2009 model to the 2012 model. I have to say that it is a very significant difference in sound quality. The 2012 model system sounds like AM radio compared to the 2009 model system.
I am a part time musician and have a home recording studio so I'm picky about my sound, but less so in my car than my studio of course. I was quite happy with the sound of the 2009 MO, not bad at all for a car system. My wife thought it sounded amazing, but she made the first comment in the 2012 LE, "is it me or is the stereo sounding really bad compared to our other MO ? " No dear, it's not you, it definitively sounds significantly worse than our old MO.
What changed ? lower quality drivers ? I would bet that they used much lower amplification power in the 2012 model vs the 2009, and I would also bet they changed the drivers to a smaller size, smaller voice coil. It sounds thin, not engaging, dull, lacks life, no dynamics, NO LOVE !!
So, not sure what Bose will come back to me with.. but I'll be sure to share it here.
If anyone else has had this experience or knows about the details of the system, Please chime in