TOPIC:

I'm enjoying my new Flex but after playing with it for a couple of days I have some questions. 

I'm using it only as a way to calibrate four SVS SB3000 subwoofers from my Marantz 8805A preamp. I've got it connected via the single SUB 1 OUT on my Marantz preamp to INPUT 1 on the back of the Flex and then OUT 1234 to all four subs. 

The first attempt at time aligning my subs went pretty smooth for never doing it before. My question is that what VOLUME does the Flex need to be on while doing this? I put it at 0.0db but wanted to see what the thought process was. 

Also, on my SVS subs, what level should I start with on the actual subs? I believe I started with the default -10dB. But want to clear this up before I ever do it again. 

@todd1010

Glad to hear that you're enjoying your Flex unit.  
You have few volume control in your chain here.. Source (from AVR), Flex DSP and amp.. Just don't overthink it too much.. Set your DSP at -10 is good as you'll have some headroom. 
Then use the amp volume and level at your AVR to achieve a base/typical listening level. You can always do your fine adjustments inside the Flex plugin. 

devTeam