can I adjust my speakers to fix this? When ever I play a movie I have to turn the DVD volume up because I can't hear the voices, and since the volume is up, as soon as there is an explosion or music in the movie, it is super loud and shakes the house, so I turn it down but I can't hear the voices after. It is no fun watching a movie if you have to constantly play with the volume. Is there any way I can adjust the speaker sound on the DVD player to balance the sound?