Vifa DX19

Frequency response

Impedance

Off axis performance

Waterfall

Linear distortion

Nonlinear distortion

Conclusion

Pro's-  Wide dispersion that only 3/4" can deliver.  Remarkable nonlinear distortion for a 3/4". Inexpensive

Con's- Frequency response could be smoother. Some linear distortion issues, most disturbing around 4k, as seen by the toneburst, waterfall, and impedance graph. Maybe even in the nonlinear distortion at 3.5 and 4k. A little bit, too at 15k, but this is common and less of an issue.

If you need a 3/4" that can cross suprisingly low, this is a good choice. If you don't need the wide dispersion of a 3/4", there are better choices. Still, there's no way to mimic wide dispersion. And this tweeter looks like it could be crossed at 2k to a 7" driver. No other 3/4" that I've tested can do that. OK, so I haven't tested that many 3/4" yet. The eton 19sd is coming...