First of a few quad 4 channel slim Behringer EPQ304 4-channel\n\n\n\n\n\nOnce the 37-D connector arrives I can see if the mating with Dolby CP500 can be used with logarithmic potentiometer works correctly or not if not I'll keep a look out. \n\n\n\nNew PSU mounted inside the rack and all mains cables will be tied up and kept to one side of the rack away from audio leads to prevent possible 50Hz mains hum being picked up.\n\nA lot of the cables behind soon to be all tided up.\n\n\n\n\n\n\n\nAmps tested but no TRS 1\/4" connected yet nor any Sparkon twist cables. The fans are sort of quiet bit produce a certain frequency that is the upper middle Hz to lower Khz range. I'll have to test once they are up and running with TrueRTA to see what the fan noise frequency is? \n\n\n\nThe quad 4 channel amplifiers will be used for the JBL five screen HF horns and I may use more for the each sidewall\/rear wall surrounds and overhead surrounds and use slightly powerful ones for the five screen bass channels.