I have owned both the L80T's and 4410's ......they are a very different in real world performance, but very similar in component drivers
the L80t has 127H, 104H and 035ti with about 5080cuin box size
the 4410 has 127H-1 ,104 h-2 and 035tia with about 3550cuin box volume.
so the drivers are pretty close.
the L80T has a much bigger box
I find the L80T to be overly bright and not esp accurate and not esp musical
the 4410 is very accurate and a joy to listen to
so if the drivers dont account for the difference...is it then from the box size or crossovers ?
I didnt realize how good the 4410 is until I pulled out the L166's and subbed in the studio monitors to the same location and source amp, BIG difference.
xtra - the 4412 shares almost an identical box with the 4410, but I did not care for the larger 12in LF in that config.