Tri-Mode Amp

[makoshark]

What is proposed in the diagram will not work at all. You cannot bridge an amp to run a subwoofer and then run stereo speakers off of the same channels. You must use an amp designed to be bridged and you cannot run drivers off of that bridged channel in stereo. Use the proper equipment for the a proper installation. If you don't, then you will end up spending more money than you would have doing it the right way from the get-go