I agree with T_bone ..... large horn speakers reproduce voice very well. Mine are as coherent as QUAD with better dynamics and ability to hold it together at high SPL.
Best speaker for vocals
I asked before about the 803d vs the Martin Logan Spire but my question should have been what is the best speaker for vocals? I have Klipsch RF-7s and they have a great lively sound but I do feel like the midrange is a bit hollow at times. What are opinions on a speaker that is known for its midrange? I listen to David Gray, Avett Brothers, Ben Harper, etc. I want the most realistic vocals. I have read that Harbeth Super HL5 may be the ticket but it is not full range and there is no matching center.