Watermelon test for audiophiles!

Just cryo the melon.  Works every time.

Tapping a watermelon is just part of testing to see if it's ready to eat. You need to look at the navel to make sure it's brown, not green,  also look at the skin color to make sure it's a bit faded. Then it's on to the smell test.. ;)

I know none of this has to do with your metaphor, but you did start out talking about how to test a watermelon.  I'm not about to do all those things to check audio cables...just watermelon. 

I don't understand this topic at all.

That is to say, I understand the tap test for watermelons very well...it has never failed me.

I can also hear differences between cables. Not always, but often.

Not sure how any metaphor connects these ttwo things.

@desktopguy ,

I believe the premise of the op is that if you do not possess the auditory skills to hear the reverberations of a perfectly ripe melon whilst tapping upon it, you do not possess the skills to discern the auditory differentials of various quality cables.

But in a fun, lighthearted way.

(desktopguy frantically googles these unfamiliar terms, "fun" & "lighthearted")

Thanks for the good explanation, @thecarpathian