I need to help in a school which their sound system is having a strange setting. The Hall could be used for about 1,000 audience, the system is comes with the building. The front part is covered by x4 ceiling speaker, back is covered by x5 12" tile down to the audience seats. two sub-low is hanged in the two side of the gym... Now the gym is having a very large reverb, is there anything i can do to reduce the reverb of enhance the audience experience? Thanks.