Sony XAV-AX1000 Head Unit - Equalizer Settings?

Does anyone have this head unit installed. I have been messing with the equalizer and still not satisfied with the whole thing with my stock speakers. It can peak really loudly and screech at the "s" and "e". Any one have a good general setting for it. On the head unit I play to about volume level 12 - 13 and that's when some songs, not all, peak badly.