The Madisound crossovers look fine, they are built correctly.
Your hookup wires have the woofer polarity reversed on one crossover, but correct on the other. This will cause some very serious problems with imaging and midrange frequency response! On your speakers, red wires always go to positive for both the drivers and the crossover connections, and white is always negative. But this error should still allow you to hear high frequencies coming out of tweeter with your ear close to the tweeter (and volume down low.)
As openly baffled suggested, the tweeter out positive red wire is uninsulated as it passes over the tweeter out negative solder pad. If this wire bends down to touch the neg solder pad below it, then it will short and mute the tweeter and make your amplifier unhappy. So unsolder that positive cable and cut off some of that extra uninsulated conductor and or solder it higher up on the solder pad so it can't short with the negative pad. All that extra uninsulated wire on all your in and out connections is unnecessary. 1/4" of exposed copper is all you need. Uninsulated conductor should not extend outside of the solder pad area to which it's soldered. Looks like the same potential problem of tweeter shorting is on both crossover boards. Doesn't look like they are shorting yet in these photos.
Last thing is make sure the tweeters are healthy by measuring the voice coil resistances with ohmmeter to make sure they are close to the "Re" spec published in the tweeter datasheet.
Let us know what you find.
