Hi Jack
I would suggest you search this forum and Arranger forum for Z5500. There are some that think them a computer system,hence no good for playing out. I venture that, by far, the most have never heard them. Most like them alot.
I played out in a hall larger than yours many times,with a twenty piece band using mine. I had many compliments,and had no trouble coming through the all the brass and reeds. You really need the subwoofer that does an excellent job.
I would still be using mine but,stepped up to a Bose PAS. However,the Bose is $2000,and the Logitech is $275.
Good luck
Bernie
_________________________
pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact