three.1

[megs207]

I have a few questions which are actually for my brother in law who has a three.1 right now:

Sub level:
Since i didn't use my sub preout on the JVC HU I have it going through here. Is this just the same as it would be on the headunit or is this kinda like a bass boost?

Gain:
what should i be doing with this? should i keep it all the way down? what does it change as far as amp settings if I use this?

Sweep:
Currently I have the sweep set at the lowest (40hz) is this advisable? what should the correct setting be?