Rauliruegas...I basicly agree with your argument. But please note that I do not cross over at 80 Hz (as you state). After many frustrating years of trying to find the "right" X/O frequency I have realized that there is no one right frequency, even for a particular system. It depends on the music. I have therefore chosen an electronic crossover where the frequency is easily adjusted with the twist of a knob.
Where the music has little LF content, I push the X/O down to 40 Hzm or so. My Maggies are fine at 40 Hz. Where the music has a great deal of LF content (typically organ) I push the X/O up as high as 200+ Hz. I can do this because my subwoofer systems include a 12" NHT woofer that is used up to 800 Hz in their systems, so my SW systems are not band-limited on the high end. (They actually go up to about 400 Hz without audible distress). 80 Hz is just where I am set before these music-sensitive adjustments.
Another feature of my system that I think is good is the placement of the subwoofers as a line array (if 2 drivers make a line) behind the Maggies so that all the sound originates from the same place and with planar dispersion characteristics.
.
Where the music has little LF content, I push the X/O down to 40 Hzm or so. My Maggies are fine at 40 Hz. Where the music has a great deal of LF content (typically organ) I push the X/O up as high as 200+ Hz. I can do this because my subwoofer systems include a 12" NHT woofer that is used up to 800 Hz in their systems, so my SW systems are not band-limited on the high end. (They actually go up to about 400 Hz without audible distress). 80 Hz is just where I am set before these music-sensitive adjustments.
Another feature of my system that I think is good is the placement of the subwoofers as a line array (if 2 drivers make a line) behind the Maggies so that all the sound originates from the same place and with planar dispersion characteristics.
.