> What do you think of these speakers?
They are speakers for audiophiles. They probably aren't quite this bad these days:
http://www.soundstagemagazine.com/measurements/zucable_druid/
but they are not intended for people that want accurate speakers in a technical sense.
A few years ago I stood next to a chap enthusing over a large speaker with a single driver (not a Zu) and was completely baffled. Usually when audiophiles praise inaccurate hardware like SET amplifiers one can hear why but I could hear nothing attractive in this case.