Noticeably low and sharp volume with AM radio stations with stock BRZ radio
 

Sometimes I like to listen to ESPN radio and I noticed that when I switch to AM, the volume would be lower and it would also hurt my ears, kinda like the voices are high pitched. Hard to describe.

What EQ setting should I change to help correct this? I have the EQ at the recommended settings that was detailed here: http://www.ft86club.com/forums/showthread.php?t=15696

Any suggestions?