Frequency range is only from 45 Hz. From 35 to 45 Hz response with -20 - -10 dB. In other words, these often inaudible.
Far the biggest shame of producers is silly design. Blowing wind effervescent, not only through the outer grille, but also through the XLR sockets at the end!!! They need to be closed with the stopper! :D
The gauges are large, the weight is large, but the sound is poor..
Sorry, but I can not recommend it.