3 component 6th order XO?

[Timn8ter]

Does anyone have an example of a what I assume to be a 4th order electrical, 6th order acoustical xo that consists of only one cap, one resistor and one inductor? Would the inductor be in series and the cap and resistor in parallel after the inductor? Just guessing.

 

[Ken L]

Not my area of expertise

But I don't think you've got a 6th order crossover there.

common crossovers are going to have more than three parts when you get past first order.

http://ccs.exl.info/calc_cr.html

This crossover calculator will give you some examples of various orders

Regards

Ken L

 

[sreten]

Does anyone have an example of a what I assume to be a 4th order electrical, 6th order acoustical xo that consists of only one cap, one resistor and one inductor? Would the inductor be in series and the cap and resistor in parallel after the inductor? Just guessing.

4th order requires 2 capacitors and 2 inductors, any
resistors are for damping or sensitivity adjustment.

For tweeters its series cap, parallel inductor,series cap, parallel inductor.

For bass units its series inductor, parallel cap, series inductor, parallel cap.

For high order crossovers component matching is critical.

And they simply won't work properly with any short cuts
in the design process, e.g. assuming a resistive load.

🙂 sreten.

 

[Timn8ter]

Hmmm...I think I'll go back to the source on this one. Is it possible to achieve a 6th order rolloff if you hit the drivers upper impedance rise just right with a minimal crossover?

 

[DanWiggins]

Here you go...

http://www.adireaudio.com/Files/281-XO.pdf

The solution is a full 6th order solution, symmetric. It is from our KIT281 speaker set.

When talking about crossover slopes for speakers, unless otherwise specified assume they are talking about the final ACOUSTIC slope, since that is really what matters. In this case, we only needed a 2nd order electrical slope to yield a full 6th order acoustic slope from the AV8 woofers. This matched the tweeter (with it's 4th order electrical, 6th order acoustic) quite well...

Dan Wiggins
Adire Audio

 

[Timn8ter]

Thanks Dan. That's the one. I should've remembered that since I built some 281s a while back.

 

[kubac]

Here you go...

http://www.adireaudio.com/Files/281-XO.pdf

The solution is a full 6th order solution, symmetric. It is from our KIT281 speaker set.

...umh! Quite simple, can't believe it's 6th order! Capacitors and inductors have very nice parameters. I assume it can't be used in 3-way system without complete rebuild....