There is a common set point by the experts for setting the crossover frequency of your speaker, and the recommendation is 80 Hz. If you use an “on-wall” or tiny satellite speaker, you should set it within the range of 150 Hz to 200 Hz. On the other hand, you might use the speaker in a small and surrounding room.   On that case, keep it within 100 Hz to 120 Hz, but when the room is mid-sized and surrounded, the range should be 80 Hz to 100 Hz.