An example of what I am looking for...
20Hz - 20KHz

 

nope ... no clue on the Bloze amp and speakers but definately higher than 20Hz and lower than 20KHz.

 

I've read interviews with Bose car audio engineers where they've talked about focusing on the 50Hz - 15KHz range when designing their car systems, though I'm pretty sure the Acura system does better than that.

I saw a before/after frequency response post a while back, but can't seem to locate it now.

You know, as much as we complain about the system in the CL, try listening to the Bose system in the new Altima some time -- the Acura system sounds much better by comparision.