I use a 12.1 couples two evid 4.2. gnral the balance is almost perfect and does ncessite no correction. Although this system does sr is not intended to rooms 500 people, but plutt an atmosphere of dissemination of high quality bar or type confrence room or small rooms. Amplifier uses Yamaha and QSC 3200 900: it is with him that the rendering is closest to the High Fidler.
Note the trs high efficiency 106 dB!
Other hardware used in diffusion RCF Art 300