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

Less than one minute ago, I concluded an experiment. In series, I connected a .1uF Jupiter, copper foil/paper/wax capacitor, a Quart, 8 Ohm tweeter and the negative, of my Fluke multimeter(set to 2 VDC). Touching the multimeter’s positive lead to the + end of a 1.5V, C cell battery and the capacitor’s open lead, to the battery’s - end, results in a momentary(1-2 sec), 1.5VDC reading on my multimeter. Reversing the polarity, results in the same, every time. If there is full DC getting through, long enough for my multimeter’s digital display to recognize and register it, It’s difficult for me to believe, that(perhaps) 80VDC, from a toasted SS amp’s outputs, wouldn’t fry a tweeter. Color me skeptical.

Interesting followup- I just tried the same experiment, but substituted a ClarityCap ESA, 33uF, 250V cap and got a constant 1.45VDC reading, with either polarity. 

@Rodman99999, I'm not sure how to explain those results, but if I understand correctly the meter was indicating the voltage across a series combination of the battery, the cap, and the tweeter.  Wouldn't it be more meaningful to put the meter across just the tweeter, and put the battery across the series combination of the cap and the tweeter?

Regards,
-- Al 

Same results, for a moment. BUT, now the tweeter’s blown(it literally/audibly, "popped"). Trying to read, across the tweeter’s terminals, wasn’t any more, "meaningful"(since I already knew DC voltage would pass), BUT- decidedly more EXPENSIVE! Explaining the results is easy(ie: non-polarized film capacitors, WILL pass DC).

ssg308,

Crydom relays are typically for motor control apps.  They will not have a low enuf switching resistance and linear frequency response for an audio signal.