I'm gonna checkout the Devialet. It may take a bit to get one. I'll report back on it. I saw some screenshots from configurator. It looks like it can do dual mono subs. I would have to use the Devialet crossover and delay. It is nice that the delay/phase can be rotated in microseconds. I prefer linear phase crossovers but it may be one of those one step back, two steps forward situations. I'll know when I hear it. The other advantage would be that I could connect over Ethernet and simplify things more.