What are the pros and cons of using the extended phase linearity?

Pros

• Better phase match with two-way monitors, particularly significant in mixed system layout, such as in many immersive monitoring systems. This improves accuracy of imaging in mixed two and three-way monitor systems.
• For stereo systems: improved stereo imaging focus and precision, enhanced off-axis performance and more stable Ultra Nearfield (UNF) imaging.

Cons

• Using the extended phase linearity adds 3.7 ms more delay in the monitor. To understand the significance of this delay, consider that moving a loudspeaker away by 1 meter creates an additional delay of about 3 ms.