Not 10,000, but 9,000 would be the Zu definitions... Dual 10" full range drivers on the front w/super tweeter, NO crossover.. Plus count em' 4 10" Subwoofer's on the back of cabinet going down from 40hz all the way to 16hz, with built in amplification, not to mention they are 101 db efficient, and running the fronts on any power amp is very good be it tube or solid state, and as near perfect a package with insane design that is so simple that achieves real sound up to 130 db output! They are as good as a pile of 4500.00 parts each can get, its true and you get a 60 day trial period.
http://6moons.com/audioreviews/zu2/definition.html
http://6moons.com/audioreviews/zu2/definition.html