Sound contacts in GWX?

[MarkShot]

Were the sound volumes of contacts turned down for GWX? I ask, because my sound man (just a normal crew hand) is giving me very detailed long distance display of sound contacts on the map (yes, I am playing with show contacts). However, when I take a listen (drifting at all stop at 40M), I don't even hear anything. I recall in stock SH3, it seemed that sound contacts were much more pronounced when you listened yourself.

Thanks.