The fact that I have used the av Denon av amp before, all have the same problem: set the crossover frequency to 120hz and put the speaker small, to
speaker b & w will clear first. The treble will return to the highs of the instrument, and the mids will return to the human voice, impostor relative to other speakers. For example, kef, the human voice seems to rise to the left, the same frequency with instrument sounds, such as the b & w 704s2.