If that’s what he’s referring to, then yes – the Rokstedi sounds like someone kicking a cardboard box when you’re behind it, but sounds like dynamite blasts when you’re fighting beside a person using one.
Then there’s also the combat intuition warning sound, when you’re being targeted by someone. Could it be that?
I’ve seen a few videos of Brink running on consoles, and the game sounds better on console, to be honest. There are way more ambient sounds and when you hear a heavy plodding around and firing off those big guns, you can hear every little ding.