Default N4 Camcorder Audio Distorted

Hi Guys

I did notice that every single recording i did , especially in louder events, clubs, live bands playing etc, have distorted audio, almost impossible to listen.
I did compare all those with video taken from iphone 4, and its huuuuge difference,... every single audio you can actually listen from videos taken in iphones.
is there a way to decrease gain for mic in camcorder and are there any recommended values?

i am running, slimkat 1.7 with franco 199

thanks