Not trying to be an ass, but every speaker I have ever owned in the past 40 plus years has been at least 5 years, Kef, Paradigm, Revel, PSB, .... Bose, Polk, and many other entry level brands are.... PMC 20 years , Klipsch Heritage 10 years.. Niles ? LIFETIME ....
Its a huge part of the total package on a big ticket item like a reference quality speaker.... these are $2300 and $4200 ? I would love to hear them , but even if I walked away impressed I dont think I could lay out that kind of cash and only get 3 years peace of mind.... thats what a warranty is, peace of mind for the consumer and the confidence in your product that you back it for what is almost ubiquitous in the loudspeaker world.