Duke LeJeune (AudioKinesis) tweeter crossover

[Passinwind]

Discussion thread for Duke LeJeune (AudioKinesis) tweeter crossover. If you would like to add a comment, click the Post Reply button.

[lo-freq]

Originally Posted by Passinwind

Discussion thread for Duke LeJeune (AudioKinesis) tweeter crossover. If you would like to add a comment, click the Post Reply button.

I am assuming that if you know which midrange you want to use (in my case the 18 Sound 6ND410) that it would be better to use a fixed resistor to the variable L-pad?

Is that correct and if so, has anyone figured what value would work best (assuming the same HF driver and horn that Duke mentioned using)?

Thanks!

P.S. I considered PM'ing Duke, but thought this Q/A might benefit others as well.

[robthebassplaye]

This is my first post on TalkBass - what a cool site.

Question about the Highpass xover for the fEarful tweeter. No matter what I do with the components ( C1-1uF, C2=2uf, L1=.125mH), I can't derive a xover freq of 6.5KHz. I've tried various assumptions for the load (but the L-pad sort of fixes it at 8 ohms). How did you derive the values for the xover?

The reason I ask is that I am using an Eminence Alpha-Lite 6A-CMBR (is the the AlphaLite 6A with a closed back) - it has higer sensitivity which I like, but it also rolls of earlier and steeper than the Alpha-6A.

So, I would like to design a 3rd order HighPass at about 5K which matches the Alpha-Lite 6A-CMBR better, which I know how to do, but I'm curious how you arrived at the values for the 3rd order Highpass at 6.5KHz for this design? I tried Butterworth, perhaps you used another topology? I want to make sure I'm not missing something.

[tbone0813]

Originally Posted by robthebassplaye

This is my first post on TalkBass - what a cool site.

Question about the Highpass xover for the fEarful tweeter. No matter what I do with the components ( C1-1uF, C2=2uf, L1=.125mH), I can't derive a xover freq of 6.5KHz. I've tried various assumptions for the load (but the L-pad sort of fixes it at 8 ohms). How did you derive the values for the xover?

The reason I ask is that I am using an Eminence Alpha-Lite 6A-CMBR (is the the AlphaLite 6A with a closed back) - it has higer sensitivity which I like, but it also rolls of earlier and steeper than the Alpha-6A.

So, I would like to design a 3rd order HighPass at about 5K which matches the Alpha-Lite 6A-CMBR better, which I know how to do, but I'm curious how you arrived at the values for the 3rd order Highpass at 6.5KHz for this design? I tried Butterworth, perhaps you used another topology? I want to make sure I'm not missing something.

What values did you come up with when you did the calculations? Just curious.

[lo-freq]

Originally Posted by robthebassplaye

This is my first post on TalkBass - what a cool site.

Question about the Highpass xover for the fEarful tweeter. No matter what I do with the components ( C1-1uF, C2=2uf, L1=.125mH), I can't derive a xover freq of 6.5KHz. I've tried various assumptions for the load (but the L-pad sort of fixes it at 8 ohms). How did you derive the values for the xover?

The reason I ask is that I am using an Eminence Alpha-Lite 6A-CMBR (is the the AlphaLite 6A with a closed back) - it has higer sensitivity which I like, but it also rolls of earlier and steeper than the Alpha-6A.

So, I would like to design a 3rd order HighPass at about 5K which matches the Alpha-Lite 6A-CMBR better, which I know how to do, but I'm curious how you arrived at the values for the 3rd order Highpass at 6.5KHz for this design? I tried Butterworth, perhaps you used another topology? I want to make sure I'm not missing something.

I've heard some negative comments from very knowledgeable people on those closed-back models.
If you can avoid it (or if you already bought it -- maybe swap it) I would.
FR graphs don't tell the whole story on drivers.