touchdown sounds volume

Helloo,

First of all, the 777 sound set is really great, but I have a question, is there an way to put to volume from the touchdown sounds up? And the thunk thunk thunk? Because I think it is a little bit louder in real life. Is at an specific volume level option in FSX, like cockpit or environment? Or can I change it at via an other way except putting my speakers to max.  ^_^