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Modeled Impedance
The Measurements:

Not much to complain about here. I'll let the plots do all talking
Measured Frequency Response
Horizontal Off-Axis Response: 0 to 90 degrees in 15 degree increments.
Harmonic Distortion Magnitude 1/48 octave resolution
Horizontal Polar Response
The
Uluwatu
A high sensitivity  
high SPL design
Links to:

Main / Design Goals

Driver Selection

Cabinet Construction

Crossover Design

Measurements

Listening Impressions
All pictures courtesy of  Alejandro Fernández Valdespino