A low level of sound (F1 2014)

As is well known in F1 2014 Russian text, and sound English.
Downloaded the Crack (text+sound) from this site, but it doesn't work.
Downloaded F1 2014 - Modified Version (text+sound Russian), the game works, Russian voice helps in the race, especially in a career, but it is rather weak (worth 100%) in volume compared to the roar of the car. Decrease the sound volume of the car has a limit of=50%. Searched for files for the sound in the game, and in the system of the game, to adjust the sound, but found nothing. In the Internet also nothing.
Maybe someone knows how to reduce the volume of the car or increase the volume of speech.