This question is aimed to TRUE Elec Engineers, not fuse or wire directionality believers.

That's because there is no need. I've got plenty of scopes but its academic.
Just don't put a cap on the tweeter that is larger than it what is needed to cross it over properly, and you won't be able to damage the tweeter when DC is applied to the speaker. Ask any speaker designer.

For anyone who risk blowing their thousands of dollars costing speakers because they rely on tweeter caps, be my guest and good luck.

I still will be building my protection circuit :-)

"That’s because there is no need. I’ve got plenty of scopes but its academic." Sorry to say, that’s what I expected. Regarding, "Ask any speaker designer." I made my living, in Orlando/Winter Park, FL, repairing/reconing speakers, designing/building and selling pro and home audio speaker systems, back in the 70s and early 80s. The ’Great Winter Park Sinkhole’, pretty much put me out of business. It ate part of my property(along with all utilities) and three neighboring businesses, almost bought it as well(two did, not that any of that matters). Happy listening! https://www.orlandosentinel.com/news/nationworld/os-fla360-pictures-winter-park-sinkhole-20121113-ph...

Yikes!! Sorry to hear about that!
Did you ever see a case where the tweeter was damaged by a shorted output transistor? I only saw it happen if the amplifier was overloaded (in which case the woofer often survived).

@ramtubes, I am aware that MOStTSSRs use thyristors and are not suitable for audio applications.  They are designed for motor controls.  That is why I am getting ones made with back to back Mosfets.  Pls see my post above regarding the audio SSRs specifically made for this purpose that are being sold by Holton electronics in down under.