The square shape of the panel and the large amount of sound-absorbing material effectively reduce the reverberation time of low-frequency sound in the room. The panel uses a membrane that reflects high frequencies, increases the efficiency of low frequency absorption, and isolates the mineral wool filler from contact with the environment. Sound absorption is focused on the low frequency range (40 Hz-400 Hz). The panels are easy to install - just put them in the chosen place. It is also possible to install one on top of the other, forming columns. The Q Basstrap is light weight, so you can easily change the placement of the panels to find the best spot for this acoustic treatment device.