EQ may or may not help you, it might get your output bettor or worst w/o the proper tweeking measures, consider what youe venue consist of, i had and encounter with one of our churches that had glass door and windows and yes the sound really bounces back and forth, i tried what i can for the day but still no good, recommended to buy thick curtains asap so that the sound may somehow be absorbed and VOILA! it helped a lot, check things first and assess what can be a abrupt resoution to your problem