Best way to clean glossy finish on speakers?

I have kef r 11's in glossy black grills off. I use microfiber towels from Walmart from the auto department which do not have any bindings at the end with glass plus very lightly, also I wear a headlamp you will be surprised how much dust lays on the speaker cones themselves. You could see everything that you've been missing

Ozzy...you're a genius. Read my previous post...or not...anyway, you're a genius.

A belt sander followed by a blowtorch for deeper scratches. 

LOL