OK, I was wondering why the LF below 100 Hz would be low like it is. It makes sense, being a smaller near field monitor. The peak just above 100 Hz is typical. Like Sonnie says, adding a sub and finding a good position for it in the room will help the LF response. I will look at your other plots shortly.
Looking at the files you posted, your response below 2 kHz is about what we would look for with small near field monitors with a subwoofer in an untreated room. The dip at 85 Hz is probably a combination of phase misalignment between speakers and sub and some boundary reflection causing some cancellation. They throw in the 120 Hz peak so it seems like they are giving you some lower bass even though they are not. Above 2 kHz the speakers don't match very well - that could be dudto alighment - and the response is about 10 dB low. There might be a treble control turned all the way down.