Powerful speakers? Like, 200W each? Recognised speakers, perhaps? Famous? Effective? I know it's just a quibble, but it really seems to me that "Powerful" is n

Powerful speakers? Like, 200W each? Recognised speakers, perhaps? Famous? Effective? I know it's just a quibble, but it really seems to me that "Powerful" is not the adjective you want here. That said, I can't read the article, since the site is down, so who knows, maybe Powerful is a really clever pun that I'm not getting.