I understand all of that, but my point is still valid, and you didn't answer my question, so it is impossible to give you meaningful help. The LM3886 has a high-ish impedance input, so driving it is trivial (0.1%). That means that the other 99.9% of the crossover design is about what it does. Do your speakers need steep or shallow crossovers? Do you know the crossover frequencies?
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I am using a passive line level cross over between to B1 buffers in front of my lm3886's. Very good. Easy diy
hi everybody, Harolda. I was looking at the B! on the net. B! come with a single power supply and the LM3886 is dual rail supply. does it matters......thanks