3.1 setup - connecting 3 speakers on a stereo amplifier - no sub solution

Does anyone try the Brian Eno or the Altec approach for installing 3 speakers on a stereo system?

https://pin.it/1JXhyTD

https://pin.it/5wANCnv

any constructive comment? I search a no sub amplification approach?

I think Klipsch LaScala was intended to be a center speaker with 2 Klipschorn?

thanks regards