I don't know if caps will make enough of a difference. My understand of Clarity caps is they are a bit more higher resolution and uncolored. The Mundorf caps may be a little colored/veiled in comparison, but that's a hard call.
Probably the best way to tame a tweeter is to start using a lot of pure copper interconnect / speaker cable and ensuring that the terminations are all gold-plated. Get rid of any silver or silver-plated elements in your transmission line. This can also include digital cables, such as S/PDIF COAX or HDMI.
Probably the best way to tame a tweeter is to start using a lot of pure copper interconnect / speaker cable and ensuring that the terminations are all gold-plated. Get rid of any silver or silver-plated elements in your transmission line. This can also include digital cables, such as S/PDIF COAX or HDMI.