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RE: Are my ears really that sensitive?

This one looks better than the one with the inductor connected in the mid HP.

If you are saying that the one with Roger's 60uF cap but keeping the 2nd order mid HP has an audible midrange bump I would agree. I think the midrange comes out slightly more sensitive than the bass so to get an idea of the actual final response you would need to imagine the Gann diagram as having the midrange contribution about 1 db higher. That coincides with the measurements you took, though you would want more of them averaged on a 20-30" window to get a definitive idea of the FR.

Anyway, this looks better on the lower peak impedance and flatter FR and lack of a bump in the 1-2 khz range. Besides that it is a 1st order filter, which I would take over a 2nd order any day so long as no drivers are put in danger and nothing untoward happens.

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