Tweeters:

Vifa  DX25TG-05-04

1400 hz	2000 hz	2800 hz	4000 hz
5000 hz	7000 hz

Vifa XT25TG30-04

1400 hz

2800 hz

4000 hz

Scanspeak D2905-9300

2000 hz

3000 hz

4000 hz

5000 hz

HI-Distor...I mean HI-VI  RT2H

2000 hz

3000 hz

4000 hz

5000 hz

Interested in knowing what you are looking at here?   Put simply, you put one tone into the speaker it should play one tone back to you.    In most of the distortion test I'm using a modulated tone as described on linkwitzlab but in the two measurements above it is a pure tome.   Compare the results of the Scanspeak tweeter with the Hi-Vi.  The vast difference in the quality of these two tweeters make for easy viewing of the good vs. the bad.   Note that in the Scanspeak data you see a peak for the input tone and very little harmonic tones.   Note that in the Hi-Vi data you see a lot of harmonic tones.    Now I know some may like the sound of the Hi-Vi Planar tweeters but the above is a visual of what you are listening to.   Listening to the RT2's reminded me of that old Saturday Night Live skit...Remember the one..."yeah, I hate when that happens"...Last night I was taking some spikes and driving them into my ears with a hammer....and then I was listening to my RT2's...yeah I hate when that happens!

More tweeter data to come...