This is a 2 way bookshelf.

Woofer is a Peerless HDS134, without phaseplug (here)

Tweeter is a Vifa XT25TG30-04 (here)

This is the woofer Impedance response, in his bass-reflex box

This is the woofer Frequency response, in box, with and without the crossover network (gated)

This is the tweeter Impedance response

This is the tweeter Frequency response, in box, with and without the crossover network (gated)

Impedance response of entire loudspeaker

Frequency response of entire loudspeaker (gate)

A merging of gated far-field response (gated, high frequencies) and near-field response (no gate, low frequencies)

The merging frequency is 200Hz

Some gated Frequency responses:

45°, horizontal

40°, vertical, low

30°, vertical, high