Problem with new monitor speaker set up.

Hi all, I recently moved into a new build flat and designated one of the bedrooms as a new studio. I also purchased some Kali Audio LP-6s as they seemed fitting for what I needed. After setting everything up and opening logic I noticed the low end to be very lack luster. The sound was very mid range and when turned up the only increased the distortion. I have used the speakers for listening to records run though a pioneer djm mixer and they sound fine. I should mention I'm using a Lexicon Alpha sound card and logic X.

Could the lack in low end be something in logic, the sound card or simply the acoustics of the room? It seems off that it would be the speakers as they don't seem faulty and have reported great low end on many reviews.

Edit: I should also mention that in headphones everything sounds fine.