Reason welcome,

Why are you considering screwing into the speakers, not a great idea. You have lots of options that won't harm the speaker cosmetically or technically.

I found some nice shelf brackets at the local home improvement store with black covers that work fine and the VP150 sits below my screen must fine.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85