I play in a band and for our p.a. Setup we have a powered mixer running into passive speakers. The powered mixer only has 4 channels and we want more. I've been given non-powered mixer with 12 channels. So my plan is to take the left and right main XLR outputs from the non-powered mixer and plug them into the XLR inputs on channels 1 and 2 on the powered mixer, panning hard left and hard right respectively.
My only concern is that according to the manual, the powered mixer has +15 V phantom power on the XLR inputs at all times. So is it safe to do as I described, or will I damage either mixer?