If you refer to the listening window on the SoundStage! review you will see that the significant drop goes away. The listening window is a much better measurement of the actual performance of the loudspeaker. Your question about the mid-range response goes to the core of the compromise in this type of design. The deeper bass being created by the same driver will have an effect on the mid-range, albiet minimal. As you move up to the M60 and M80 this issue is addressed by the use of dual 6 1/2" woofers dedicated to just the low bass.

Ian Colquhoun
President & Chief Engineer

Ian Colquhoun
President & Chief Engineer