( "Right-Click" ) the pic & open in a separate tab, to see it's full size .

2

The HF output ( ie; voltage-drive ) is displayed within the smaller window ( called the "Bode-Plotter" ).

The cursor within that window is set to around 2K.

One can see that the 6uF variant of this network employs a ( restorative ) response peak at around 2K ( right near the x-over point ).

I'd need to see some raw measurements of the speaker before commenting on whether the peak is truly needed.

All you can do is try this variant and see if you like it .