My Yamaha NS-5000's have one 12 inch woofer each. You have to look carefully to see them move. It's a 6 ohm driver with a 3.5 pound woofer coil, which I think is key to its incredible bass texture and detail down to 26hz. I rarely hear my subwoofer.
Midrange and tweeter (4 ohms both) are the identical (to the woofer) carbon fiber coated in Monel (copper nickel alloy). Hence it is virtually impossible to isolate a driver with your ears.
The rub is this design is in its relative energy inefficiency. The user guide says 200 watts "nominal." I ran them on 250/500 8/4 ohm Ice Modules for a while. Now they are connected to 500/1000 watt Ice Modules which I think is about right. My wife noticed the difference immediately. We have a 13 foot listening distance in an open plan tract house. So no nearfield listening and no flea watt amplification.