I'd give you a Beach Boys reference here but let's face it Pet Sounds is a pretty ridiculous piece of enduring art (Wouldn't It Be Nice and God Only Knows in particular), where we're just going to show you a minute long clip about noise levels of a few hubs.
As we make videos about the wheel building process (the first will post either end of this week or early next), I should really learn to script. As you'll notice and as we point out, I misname most of these hubs. Fortunately it doesn't affect the substance - a T11 sounds exactly the same as a CLD and an Onyx rim brake hub sounds exactly like an Onyx disc brake hub. Which is to say that there is no sound to either.
Here you go