How to use Passive Crossover Designer by Jeff Bagby - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 49 Old 06-12-2017, 09:51 PM - Thread Starter
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post #32 of 49 Old 06-19-2017, 12:08 PM - Thread Starter
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I just added the 5th installment. I've already shown how to auto-populate a 2nd order crossover based off the frequency. Unfortunately, this only creates a Linkwitz-Riley, which is not always the best for the speakers you choose. In this video, I will go over the 4 different types of crossovers in this program (Bessel, Butterworth, Variable Q, Linkwitz-Riley), how to determine their component values. Each one of these crossovers will directly affect your final frequency response of the speaker you are building. So if the auto calculate does not get you your desired response, try a different 2nd order crossover.

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post #33 of 49 Old 07-02-2017, 05:51 PM
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I did attempt to upload the file, but AVS forum is not allowing me to do so. It states it is an invalid file type. If I can think of another way to upload the file I will.
For future reference, if you just .zip the file, you can then upload it (as long as it's less than the max file limit; for bigger files, use a link to DropBox).
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Did you really need to quote that entire post in your reply?
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post #34 of 49 Old 07-04-2017, 09:04 AM - Thread Starter
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Alright Guys, we are now on the 6th installment. In this video I will show how to properly determine a box size using either Passive Crossover Designer or WinISD. Feel free to ask any questions if you have any.

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post #35 of 49 Old 07-06-2017, 11:47 AM
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Here is the xsim tutorial we discussed. Its pretty technical and expects a good knowledge base but Ill eventually get to some simplified stuff. I also added your videos to a playlist that I can hopefully grow with more design software type tutorials.


My youtube channel: Impulse Audio
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post #36 of 49 Old 07-06-2017, 11:53 AM
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post #37 of 49 Old 07-06-2017, 12:09 PM
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Wow guys!!!! Thank you!!
Gonna give XO design a whirl?

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post #38 of 49 Old 07-06-2017, 12:37 PM - Thread Starter
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Here is the xsim tutorial we discussed. Its pretty technical and expects a good knowledge base but Ill eventually get to some simplified stuff. I also added your videos to a playlist that I can hopefully grow with more design software type tutorials.

https://youtu.be/Ccqij1DZafs

This is awesome! Thank you! I'll make sure to let everyone know you put this out there. If you don't mind, I'm going to add yours to the first page of this forum topic as well. As you best said, let's give some options
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post #39 of 49 Old 07-06-2017, 12:38 PM
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I just learned to calculate phase alignment between subs and mains last night so why not?? ;-)
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post #40 of 49 Old 07-07-2017, 04:17 PM - Thread Starter
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I just learned to calculate phase alignment between subs and mains last night so why not?? ;-)
Seriously. Why not? Plus it is fun to desing speakers, even if you never build them. And when you do finally get the courage to do it, the results can be quite rewarding.
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post #41 of 49 Old 07-07-2017, 04:35 PM
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Seriously. Why not? Plus it is fun to desing speakers, even if you never build them. And when you do finally get the courage to do it, the results can be quite rewarding.
Agreed. I need to take the time to study the fundamentals as all that I know I've gleaned from forums. The tutorials are great, don't get me wrong. They are quite awesome but I would like to know the theory before I dive in.
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post #42 of 49 Old 07-07-2017, 06:27 PM - Thread Starter
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I completely agree. It is important to understand the fundamentals and how that changes/modifies your design. I am excited to see where this new leg of DIY takes you.
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post #43 of 49 Old 07-07-2017, 08:01 PM
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There are some excellent books that could explain the theory and different networks. Fascinating subject. The secret sauce that sets the advanced designers apart from the cookbook readers.
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post #44 of 49 Old 08-14-2017, 12:51 PM - Thread Starter
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Okay guys, last in the series is Phase and how to best calculate it in PCD. HEre is the link to the video. I hope this helps!

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post #45 of 49 Old 01-12-2018, 01:57 AM
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Instead of SPL Copy try this:

How to use FPGraphTracer

FPGraphTracer download
http://labs.fprawn.com/index.php/fpgraphtracer/
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post #46 of 49 Old 06-30-2018, 12:12 PM
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Quote:
Originally Posted by Steve Hanna View Post
Instead of SPL Copy try this:

How to use FPGraphTracer
https://www.youtube.com/watch?v=NO8CHG2FSsY

FPGraphTracer download
http://labs.fprawn.com/index.php/fpgraphtracer/
Tried this one wish they would have went into more detail on Impedance i cant get it to properly do it
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post #47 of 49 Old 07-01-2018, 08:24 PM
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Quote:
Originally Posted by tuxedocivic View Post
Here is the xsim tutorial we discussed. Its pretty technical and expects a good knowledge base but Ill eventually get to some simplified stuff. I also added your videos to a playlist that I can hopefully grow with more design software type tutorials.

https://youtu.be/Ccqij1DZafs
Will this help me with my issues? i cant get passive xover software to make a somewhat flat response and ive spent hours trying- i can tag you on post
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post #48 of 49 Old 07-01-2018, 08:30 PM - Thread Starter
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Tried this one wish they would have went into more detail on Impedance i cant get it to properly do it
One common issue I see when people have issues with this, is they forget to reset the measurements on the graph (left hand side). Typically x axis stays the same, but you need to change your y-axis to ohms instead of spl.

If this isn't your problem, let me know what you are actually having issues with, so I can see if I can help.
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post #49 of 49 Old 07-02-2018, 07:15 AM
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Will this help me with my issues? i cant get passive xover software to make a somewhat flat response and ive spent hours trying- i can tag you on post
Im not sure what your issue is, but it the problem is getting the drivers to work together and get a good result then it wont matter what program you use. If it is something to do with the PCD software not working for you then I would definitely try Xsim. It's a pretty good software.

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