Designed to complement the LYD series and other Dynaudio Pro studio monitors (including the classic BM series), the Dynaudio 9S subwoofer is designed to deliver an astonishing 300 watts of power despite its compact size, ensuring precision and musicality for the demanding professional studio work even at high volumes.With a powerful and tight bass response, it relieves the main monitors - they can now concentrate on reproducing the frequency range above 50 to 150 Hz (depending on the selected setting of the crossover) The long-throw driver can reproduce the lowest frequencies accurately - down to 22 Hz. The low-pass cut-off frequency adjustable from 50 to 150 Hz and the low-power LFE output allow flexible use in a wide variety of studio environments.