The "direct output" mentioned by the servo/crossover instructions is most likely referring to the main output(s) of your preamp.
With few exceptions, most preamps are configured so that whatever source is selected is also going out the "record output", except without balance/tone/volume control, so you wouldn't want to connect your crossover/amp/speakers there.
With few exceptions, most preamps are configured so that whatever source is selected is also going out the "record output", except without balance/tone/volume control, so you wouldn't want to connect your crossover/amp/speakers there.