Most, if not all components come with a crossover of some type, all speakers are usually connected to this crossover (some exceptions). This means that the crossover has an input from the amp and then two sets of outputs, one for the tweeter and another for the crossover. Each set of speakers has it's own crossover, meaning the left and right speakers have their own. If this is what you have then yes, you can bridge your amplifier into two channels and connect it into the crossover.The second option is usually found with basic components. The tweeter only has a crossover that is inline with it. The tweeter hooks to this crossover and than hooks into the mid (a parallel circuit). The mid is running full range (OK but not the best) and in turn is hooked to the amp, be it a 2 channel or 4 channel in bridged mode. Hope this helps you.