Should I use capacitors for tweeters powered by Hypex Fa123 ?

[RickS]

Changing my feedback as did not realize how expensive that tweeter is...

Use the caps and protect those tweeters.

 

[McFly]

Use a large electrolytic to push any FR effects way down low and parallel a nice normal xo cap over it to keep ESR down low. As others have said do all measurements for xo design with the cap in place first.

 

[gene_stl]

Can anyone show a picture of how the CAP is connected to the tweeter.

Along the + connector? Between the + and - on the tweeter?

 

[MakeMineVinyl]

Either would work, although the lower picture is how its typically done.

 

[dualazmak]

I recently very carefully compared the Fq responses in SP level signal "before and after" the protection capacitors as shared here.

I highly recommend you to use "proper" protection capacitors for your treasure mid-range drivers, tweeters and super-tweeters.
I am using these, 68 microF Caps for Be-midrange squawkers, 10 microF Caps for Be-Tweeters and metal horn super-tweeters;

 

[Chris M]

What you can find on the web ... at least fits the topic of tweeter protection. A light bulb, so to speak.
http://www.roehrenklingklang.de/LightNEasy.php?page=Frequenzweichen