I agree. I appreciate the "simpler is better" approach, and find good solutions that are physically simple to be elegant. But a loudspeaker is a complex load, so a network that is physically simple often creates a system that is reactively complex.Sometimes a conjugate filter is needed to compensate for the built-in filter of the speaker, itself. In this case, what appears to be complex is actually counteracting something else equally complex, balancing the equation to form something pure.