S. Harsch XO

[xrk971]

@xrk971

have i used correct calculation? need advise for my drivers

Sorry I didn’t see this - my notifications were not working. On paper looks good but depends on driver behavior near those points. If you had a perfectly flat driver response that should be good.

 

[AdamThorne]

Right click on the amplifier source and adjust total phase until it doesn’t wrap. This is just phase wrap from time of flight difference between microphone and amp for both woofer and tweeter.

Ah, there we go. Yes, I figured it was the time delay from the tweeter, and couldn't figure out why it wouldn't wrap. It looks like also instead of moving the tweeter back (in the sim) and leaving the woofer at the reference distance, you can shift the woofer forward and leave the tweeter at the reference distance to achieve the same thing. I was mentally stuck on moving the tweeter back.

Great to see you achieved this on a passive crossover. But once you put in real FRD’s it might not look so perfect and will require a few more components to address baffle step loss and possibly some notch filters to deal with non flat driver behavior.

It's just a sim, haven't achieved much yet! But I have measured acoustic centers on a woofer + CD combo that leaves the tweeter behind the woofer, so I think I can get the delay right. Now that I believe I have the sim set up right, I can export the wf and twt curves and use them as target responses when working on the actual XO with real driver data. I wanted to monkey with the idea a bit before making sawdust.

Thanks for getting me sorted!