Got a question. Just installed my 4065. I connected the front speakers to channel 1 & 2, and will be bridging 3 & 4 to a single 10" sub. Is this setup right? I saw some people use 3 & 4 for the front and 1 & 2 for the there any difference?

Now, everything set to flat. Where should i put my crossover for my front speakers? I have a focal 6.5" comp.
How do i use the selector switch (3+4, 1+2, low).
And how much gain do you guys use right now, 3/4? mine is setup to 1/2, i will put more gain when i get home.

I have an alpine 9813 deck, and i dont know whats the max
number on the volume?