Deep bass - that a ears bleed

Also, I can only agree with the recessions that the subwoofer too heavily emphasized in the higher low frequency (150-300 Hz). Even on the smallest controller position sometimes catch me "ears to bleed" in the oomph, but is ultimately a matter of taste!
And another one; the grille of the subwoofer can be for cleaning BUT TO REMOVE by carefully using a screwdriver aufhebelt the edges 1a goes!
Otherwise, the sound is quite good, only the high tones (15-20 KHz are somewhat reluctant, it sounds to me often a little too dull!
The radio interference, which many describe here, by the way are shortwave signals in 9 MHz, also occurs in wired microphones. (Voice of Russia, etc)
Conclusion: For the price decent sound, with little weaknesses, but surely there are also higher systems.