Resessed midrange/woofer

What's the purpose of the recessed midrange some manufacturers do?
Small waveguide?
Only for looks?
Anyone tried it?

1000015693.jpg
1000015692.jpg
 
Last edited by a moderator:
Most of the speakers I've seen have only the midrange or both midrange and the tweeter recessed.
To get the tweeter time and phase alignment isn't it a bad thing to only move the midrange further back?
Long story short...The primary reasons usually revolve around time and phase alignment, as well as improving the overall frequency response and directivity, also help with smoothing edge diffraction... IMHO

It would be very interesting to see measurements, anyone who wants to share?