Arum Cantus G2si test results

Frequency response plots. Done with praxis MLS/resynch with 200mV stimulus.

For what it's worth, a graph out past 40k

Also, a graph of two separate units on different days. Note one unit was measured at 0.5m and the other at 1m.

Horizontal off axis results are shown below. First to 20k, then the corresponding 50k plot

Linear distortion results

Waterfall to 20k at 0 degrees rotation.

Waterfall to 20k at 15 degrees rotation.

Waterfall to 50k at 0 degrees rotation

Waterfall to 50k at 15 degrees rotation.

Burst distortion tests

Selected at different points based on inspection of the FR curve.

Nonlinear distortion

Done at 0.25m. Praxis is recording actual SPL level. Subtract approximately 12 dB to get dBSPL @ 1m  equvalent.

Increasing the level by 6 dB using a 5k burst results in the following

The ribbon deformed when trying to do a 3 toneburst at 106dBSPL at 0.25m with the center burst frequency at 4k.

For comparison, the FFT of a single 4k tone is shown. The g2si had no problem with this.