Read the Test Bench report by reviewer Vance Dickson- about the new TSCT1044 Supreme tweeter. It was just published in Feb. 2016 Voice Coil Magazine issue.
“…the new soft dome tweeter from high-end Israeli OEM driver manufacturer Morel’s Supreme product line…”
See the graphs showing on and off axis response, SPL, SoundCheck distortion plots and more.
In conclusion: “another well-conceived tweeter from Morel engineering.”
Here are a few graphs from the review: