You have only a woofer and a tweeter so you need a crossover network for a 2-way speaker. It has only one crossover frequency, usually about 3kHz to 4kHz.
But you made a crossover for a 3-way speaker that has a midrange driver therefore the crossover has two cutoff frequencies: 1kHz between the woofer and the midrange and 6kHz between the midrange and the tweeter.
A typical crossover network is second-order so that the slopes drop at 12dB/octave.
But you made a first-order crossover that has slopes of only 6db/octave that are nearly useless.
Here is one of many articles found in Google about speaker crossover networks: **broken link removed**
Here is a very simple 2-way second order crossover network: