Crossover capacitor replacement

Hello,

I own a pair of vintage, yet still kind of working Sony speakers, namely SONY SS A705.

Now, the issue with them is that the mid driver on both speakers sounds a bit "damp", voice doesn't sound that clear in general, and they're barely producing any sound. Tweeters and woofers sound good, as far as I can distinguish.

I've done the following tests regarding the mid drivers:

- the battery test, to check if the membrane is moving, and it does move

- ive connected them directly to amp to check if they will produce sound, and they do

- checked for expected resistance using an ohmmeter, all seems ok

So after some research, ive concluded that the issue might be in the crossover(s), perhaps the electrolytes in capacitors have evaporated due to old age (?) But I dont really have the proper equipment to check electronics.

Finally, my question is:

Is it worth the hassle to replace the capacitors, because im having trouble finding replacements in Balkans, and maybe I have overlooked some other issue, so if you have any advice, I'll gladly take it :))

TLDR;

A pair Vintage Sony speakers (early 90s), sound from mid drivers is very weak, most likely capacitors are dying. What to do?

Thank you in advance, all help is appreciated :))))