I also agree with Shailat about rolling off 100 Hz and below. Depending on the song, I have rolled off up to 140 Hz with a gentle slope filter. But it depends. Usually on background vocals, I may roll off a bit higher. I have never rolled off anything on the top end. That's where all of the sparkly stuff is. Keep in mind that I rarely use EQ during recording (mainly just a high pass filter set at about 85 Hz). Most of my EQing, including high pass filtering beyond 85 Hz is done at mixdown. I agree strongly with the guys above. If you are not SURe how to properly use something (e.g. EQ), don't use it during recording. Record everything flat and play around with settings during mixdown.
Rev E