Feel free to correct me here if you think I’m wrong. For the ‘basic’ crossover at 4 poles and 2500hz all we need is 7000/2500. This gives you C of 3nf and C/2 of 1.5nf. The rest of the crossover remains ‘stock’. Micheal’s calculator is for more advanced designs?
Regards,
Dan
Sorry for confusing people. I forgot the “7000/f rule”, still, we both proposed 2.5 and 3. 
I made two boards for 12dB only. On the first one used 3.3nf only (6000/3.3 = 1818hz) and for the second board 1.5nf (6000/1.5 = 4000Hz) . If I turn the pots up (higher resistance) the crossover point goes down and conversely if they are turned down the crossover goes up. Easy peasey to adjust. More so than I could have imagined before it was hooked up and working. Nelson did all the hard work in the design and he has given it to us to play with. Wonderful
Hello 6-24XO builders,
in my first build of the 6-24XO I also divided at 2500 Hz with a slope of
24dB/oct.
My values were the following - and it is proven to work great.
I lowered the 10 kOhm resitsors to 4.7kOhm.
But there are many ways to do it.
Greets
Dirk
in my first build of the 6-24XO I also divided at 2500 Hz with a slope of
24dB/oct.
My values were the following - and it is proven to work great.
I lowered the 10 kOhm resitsors to 4.7kOhm.
But there are many ways to do it.
Greets
Dirk
Attachments
Hello 6-24XO builders,
in my first build of the 6-24XO I also divided at 2500 Hz with a slope of
24dB/oct.
My values were the following - and it is proven to work great.
I lowered the 10 kOhm resitsors to 4.7kOhm.
But there are many ways to do it.
Greets
Dirk
Are you referring to this part of the 6-24 PDF?
Regards,
Dan
to chris 64
Hello Chris64,
Start reading from post #526 in this thread. There is some information about going balanced with the 6-24XO by converting the signal from balanced to single- ended and vice versa.
If you want to go balanced (without changing the signal) you need two 6-24XO.
Your balanced signal consists of a positive and a negative signal (and ground).
You send your positive signal through the low pass and high pass filter and
negative signal through another lowpass amd high pass filter (with the same values in C and R for positive and negative signal.
So one complete 6-24XO-board for one channel balanced / two way crossover.
You should read through this thread.
I hope this helps
Greeets
Dirk
Hello Chris64,
Start reading from post #526 in this thread. There is some information about going balanced with the 6-24XO by converting the signal from balanced to single- ended and vice versa.
If you want to go balanced (without changing the signal) you need two 6-24XO.
Your balanced signal consists of a positive and a negative signal (and ground).
You send your positive signal through the low pass and high pass filter and
negative signal through another lowpass amd high pass filter (with the same values in C and R for positive and negative signal.
So one complete 6-24XO-board for one channel balanced / two way crossover.
You should read through this thread.
I hope this helps
Greeets
Dirk
Till now I only played with the values in the simulator of Michael Rothacher.
I am focused on a 24dB crossover characteristic (steep slope).
I compared the schematic in the article of Nelson Pass with the schematic in
the Simulator of M. Rothacher.
I attach some screenshots.
You can play with the values of the C's in the simulator.
I am not 100% sure which values I wanna use yet (the C's).
I changed the values of the resistors (original 10kOhm) to 4.7kOhm (in the low pass filter) and from 10kOhm in the high pass filter from 10kOhm to 6.8kOhm. Because they are always in line with the pots.Still enough adjustment range with the 50kOhm-pots.
Please be patient with me.
All is only simulated yet. Listening tests have to proof the simulations.
Also pay attention if you play in the simulator what your phase-shift is doing.
Greets
Dirk
This was the perfect post for me because I was still a little fuzzy on relating Pa's schematic to Michael's crossover software.
Regards,
Dan
Thanks for the capacitor value suggestions for my 3kHz X-over (3nF and 1.5nF). Can someone advise what I should be looking for in the phase characteristic on the simulator? I'm probably looking at either 6dB or 12dB / Octave settings. The tweeters are currently wired out of phase, although that is obviously easily changed if necessary. When I'm tweaking the values, I seem to get 2 or 3 separate curves on the phase graph...I assume you want the high and low pass to be at the same phase around the x-over frequency?
Jonathan
Jonathan
Till now I only played with the values in the simulator of Michael Rothacher.
I am focused on a 24dB crossover characteristic (steep slope).
I compared the schematic in the article of Nelson Pass with the schematic in
the Simulator of M. Rothacher.
I attach some screenshots.
You can play with the values of the C's in the simulator.
I am not 100% sure which values I wanna use yet (the C's).
I changed the values of the resistors (original 10kOhm) to 4.7kOhm (in the low pass filter) and from 10kOhm in the high pass filter from 10kOhm to 6.8kOhm. Because they are always in line with the pots.Still enough adjustment range with the 50kOhm-pots.
Please be patient with me.
All is only simulated yet. Listening tests have to proof the simulations.
Also pay attention if you play in the simulator what your phase-shift is doing.
Greets
Dirk
Hello Chris64,
Start reading from post #526 in this thread. There is some information about going balanced with the 6-24XO by converting the signal from balanced to single- ended and vice versa.
If you want to go balanced (without changing the signal) you need two 6-24XO.
Your balanced signal consists of a positive and a negative signal (and ground).
You send your positive signal through the low pass and high pass filter and
negative signal through another lowpass amd high pass filter (with the same values in C and R for positive and negative signal.
So one complete 6-24XO-board for one channel balanced / two way crossover.
You should read through this thread.
I hope this helps
Greeets
Dirk
Dirk,
I've edited one of your previous screen captures to make things clearer for my self. I've labelled R5 and R6 from MR's calculator to your image. Correct?
Regards,
Dan
Attachments
Last edited:
to Dan
Hello Dan,
a happy new year!
Your simulation looks very good to me. You also got it with the Rs and Cs in
the simulation and to 'translate' it to the pcb.
The curves are looking good. I would try it. Perhaps you will have to try
to reverse polarity at speakeroutput of the highpass or lowpass.
I have reversed polarity in the highpass (Mid-Tweeter) in my setup.
Greets
Dirk
Hello Dan,
a happy new year!
Your simulation looks very good to me. You also got it with the Rs and Cs in
the simulation and to 'translate' it to the pcb.
The curves are looking good. I would try it. Perhaps you will have to try
to reverse polarity at speakeroutput of the highpass or lowpass.
I have reversed polarity in the highpass (Mid-Tweeter) in my setup.
Greets
Dirk
