anyone know how to properly match ur hu's voltage with alpine amps?? i have the 9835 which is 4 volt.. on the amp there is a switch .1 - 2.0volts and .5 - 8.0 volts .. so i put that on .5-8.0 obviously but how do u set it exactly with the input level mode which starts at 0db and goes down to -24 db? there is also input gain which goes from 0db, +6db, +9db and input selection Chan 1 or Chan 1+2 anyone can clarify this stuff to me i just wanna know how to properly tune my damn amp thx