So far, haven't noticed any tankgun sounds at any ranges, with the engine running. Upped in TT last night right after I installed Patch2; while driving, I could see all the tanks around me firing, but was hearing only the shell impacts. Close enough to see the tanks firing, but no tankgun sounds.
edit: Okay, just upped an osti at A26, heard a friendly tank fire at 187yds.
I'd venture a guess that last night, I was seeing tanks at 800-1000. I'm guessing there's a rough distance at which external sounds should be inaudible in a tank. What is that distance? However, it seems that I'm hearing the impacts, even when they're as far away as the tanks firing.
Running a mix of custom sounds; would that have any effect Pyro?