Amp Bridge Question

Ok, I'm using a Kenwood 920 watt amp and on the speaker outputs it shows that bridged should be positive into the left channel and negative into the right channel.

Should I set the amp to mono or stereo or off to get the most power? :banghead: I thought that setting it to mono would just push most of the power to the first channel only and not hit the negative side on the second channel. HELP.

1st 2nd
+ - - +
[___]

Bridged

mono

setting the amp to mono just sums the channels, so what's being input into the left channel is the same as the right channel. This is what you want when you bridge it.