Tweeter phase for first/second order crossover

[NIXIE62]

Shorting out the inductor actually created a larger dip around 4kHz. Makes no sense to me.

The midbass & tweeter driver phase is out of sync around that frequency and you get cancellation. Also, I don't know the position of the speaker relative to the listener, but due to the large midbass-tweeter distance, there will be cancellation above and below the axis of the speaker. You should adjust the height position of the speaker in which it plays best.

 

[Audio>X]

What matters for phase is the acoustic response, not the electrical filter topology. The woofer might well have a 2nd order acoustic roll-off, even though the filter is 1st order electrical.

For the correct 'phase wiring' of a tweeter > nothing beats a 'Phase Flip/Flop extension lead' so you can listen in listening seat position
so as to arrive at your correct wiring.
It requires making a lead of 4 CORE WIRE, and a DPDT switch 🙂

 

[Kevviek]

Installed new 4.7uF caps and reversed the tweeters, really surprised at how much difference it made, they are so much better now!

 

[Galu]

I'm glad you have improved the sound.

Did you retain the bass inductor or not?

 

[Kevviek]

Yes, I kept it. Even though the response chart was only a guide at best, removing it created an odd effect.

Potentially I could have taken it out and then tried the tweeter at standard polarity but I’m happy with them as is now.