Prof - I heard what you mean. I don't know whether the difference is in the frequency domain - the mid / tweeter coax is identical. The XO is different enough that I can't make any direct comparisons, except that the 2.7 has a big bank of electrolytic caps in its feed, which would soften the attack transient.
The MDF baffle of the 2.7 would also soften the transients, taking the edge off the attack compared to the 3.7 aluminum baffle and nacelle - cap.
I have not seen lab measurements of the 2.7, since Stereophile didn't review it. I'll know more when I get a pair of each for potential upgrade; that's at the end of a long list of older classics.
The MDF baffle of the 2.7 would also soften the transients, taking the edge off the attack compared to the 3.7 aluminum baffle and nacelle - cap.
I have not seen lab measurements of the 2.7, since Stereophile didn't review it. I'll know more when I get a pair of each for potential upgrade; that's at the end of a long list of older classics.