Are you positive on this? There was a video Meade posted on youtube showing how to use the DD1 with a crossover he purchased for testing purposes.
In the video he found max volume on the HU, found max gain on the 4 channel, and then set the gain on the XO to max
At least thats what i got out of it after watching it last night.
I just realized i probably should have posted this in the DD1 section, if a mod can move it for me i would appreciate it.