Razer carcharias problem

Hi guys

After googling to no end i have come here for your help.

I bought the razer carcharias as everyone said it was very good and thus my choice. The only problem I know have is that my friends here everything in skype. I mean literally everything. Even if i can barely hear the music they still here it. It is quiet annoying as they also here sounds from games I play. At first I just thought it was because of the way the headphones are built, but even after reducing the volume they can still hear it. Do you guys know what the problem could be?
Thanks in advance!