Much of the above I agree with, however, as you can see from the rig photos posted, my speakers are now on either side and a couple feet behind me. This makes for great monitoring, something I didn't have with the old system unless I hauled along my 12-inch monitor speaker.
Now, I hear everything the audience hears, and I rarely have to change the settings for the environment, that is unless I hit one of those rooms that is similar to playing in a high-school gymnasium. Under those circumstances, sounds bounce around like a ping-pong ball, therefore, I usually bring up the bass, bring down the high and mid range sounds, and hope for the best. A lot of the nursing home and retirement center jobs present this problem.
As for the 2000's onboard EQ, I essentially set that up like a smiley face and it does a wonderful job at most venues. On the Barbettas, the mid and high EQ settings are both set at the half-way setting, while the low is set at two-thirds, which eliminates any possibility of vocal feedback, even when I walk directly in front of the speaker just a foot away.
Good Luck,
Gary
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)