mpw, Congrats on your purchase after a long review of speakers at Mumbai.
Some technical aspects:
The M12i uses a polyproplene cone material and i think does not use a cross-over for the woofer. The lows are naturally rolled-off due to the thick cone material for the woofer. Polyproplene cones are usually very light weight and fast responding. They sometime tend to give a plastic kind of sound to me (my personal thought though) but will be very suitable for certain type of music particularly the rock music and will sound very pleasing. The details are not that refined as per my information about the cone material. But the M12i can prove it wrong looking at its review. Looking at the FR curve it seems to be higher on the mid-range response with more emphasis on 800Hz to 3KHz region. But again this again in one particular room and not anechoic response. A larger room will show a much better flat curve such as yours. Will be eager to hear from you about them after your installation.
Some technical aspects:
The M12i uses a polyproplene cone material and i think does not use a cross-over for the woofer. The lows are naturally rolled-off due to the thick cone material for the woofer. Polyproplene cones are usually very light weight and fast responding. They sometime tend to give a plastic kind of sound to me (my personal thought though) but will be very suitable for certain type of music particularly the rock music and will sound very pleasing. The details are not that refined as per my information about the cone material. But the M12i can prove it wrong looking at its review. Looking at the FR curve it seems to be higher on the mid-range response with more emphasis on 800Hz to 3KHz region. But again this again in one particular room and not anechoic response. A larger room will show a much better flat curve such as yours. Will be eager to hear from you about them after your installation.