Sorry for the newbie question. I have a Helix DSP.3 and Helix M6 amp I know how to set the incoming gain on the DSP but do I set the outgoing gain with a digital voltmeter? Looks like the M6 has a max of 6V input do I just use the software on the DSP and adjust the outgoing to 6V using a 1khz tone at 0db for the mid and a 60hz tone at 0db for the sub output? Then adjust the amp gains using the square root formula for max output voltage?