[Greg C]

I suspect the subs would be fed by a L+R sum in the processor. If you turn down the input gain on the processor, that should allow you to get your board output hotter. Since the other zones are fed directly to the amps from matrix outputs, you do have the choice of either turning down the amps directly or by turning down the sources gain on the matrix page on the Venue itself. Each matrix source has a level control that goes from off up to 0dB (unity). You can pad the signal down there and leave your matrix sends at unity. I do this quite a bit when feeding someone's -10dBv consumer level based recorder. The main mix output feed to the 2-Track output will be way too hot for those recorders. So I'll use the Main Mix as a source for a spare matrix and then pad that source down 20dB and route that matrix to the 2-Track outs so the recorder doesn't get hammered. You can do the same thing for your zones.