Soundwatts...Yes, that will work. In general I favor "proper" biamping with a line level crossover, but Maggies are not your typical cone driver speakers. First of all, the MG1.6 crossover is, superficially, a model of simplicty, but is not that easy to duplicate with a line level electronic crossover, at least not one off the shelf.
High pass is 6 dB/octave. Low pass is 12 dB/octave. The crossover frequencies (3 dB points) are not the same. All this is taylored to suit the characteristics of the panels.
A better approach (for these speakers) is to upgrade the passive crossover. Change the iron core inductor to an air core, which you will need to mount externally on the back of the panel because of its size. After removing the stock inductor there is room to install upgraded capacitors internally. I did that. However the stock capacitors are not junk at all, and I would recommend that you leave them alone. I did not remove the socks. I cut a neat rectangular opening on the back over the cavity where the crossover resides. This opening is covered by a wooden plate on which the large air core inductor is mounted.
High pass is 6 dB/octave. Low pass is 12 dB/octave. The crossover frequencies (3 dB points) are not the same. All this is taylored to suit the characteristics of the panels.
A better approach (for these speakers) is to upgrade the passive crossover. Change the iron core inductor to an air core, which you will need to mount externally on the back of the panel because of its size. After removing the stock inductor there is room to install upgraded capacitors internally. I did that. However the stock capacitors are not junk at all, and I would recommend that you leave them alone. I did not remove the socks. I cut a neat rectangular opening on the back over the cavity where the crossover resides. This opening is covered by a wooden plate on which the large air core inductor is mounted.