All full range drivers got poor ability not only 20-60 Hz , but also 60-300 Hz , so adding sub is not solved the problem, we still have big gap in mid bass. . Sound not full scale ,like traditional 3 Way LS.
If you like how full range sound , the need add regular woofer with crosspoint 400-500Hz like all my line of speakers
If you like how full range sound , the need add regular woofer with crosspoint 400-500Hz like all my line of speakers