May I ask what speakers you have? I own the Sasha 2, and like you, I don’t really notice dynamic compression at high SPLs. But when I compare them to SET/horn setups like the AG Duo, or to high efficiency cone speakers I’ve heard before, such as the Sigma Orchestra 2.9 or the Grandinote Mach series, I’m always struck by their lifelike dynamics and natural flow, especially with classical music. They feel more direct and give a much stronger “you are there” experience.
IMO, Voice coil heating and power compression are real, measurable phenomena; they can be demonstrated with graphs, formulas, and lab tests. However, what truly matters is not just the measurements, but how much these effects impact the musical experience. The loss (or preservation) of dynamics, liveliness, and emotional engagement in the sound is something that listeners perceive more directly through real-world listening than through theoretical models alone. In the end, it’s the ear that reveals the true extent of these effects, not the numbers.