How to Design a Crossover from Scratch for DIY

Discussion in 'DIY Speaker & Subwoofer Building' started by Member 786053, Jul 4, 2017.

  1. Member 786053

    Member 786053
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    For years, I wanted to design my own speakers, but didn't understand the intricacies that went into it. For all I knew, you bought a 2500 hz crossover from parts express, picked a woofer and tweeter that looked cool and went at it. It wasn't until i really got into DIY speaker building that I understood how wrong I was. Thankfully, Jeff Bagby came up with a great free to use program that can help us all out. My goal here is to help the DIY community along by helping teach the program to the best of my abilities. If anyone has any suggestions or questions, let me know, I'll see if I can help. Since, I personally am a visual learner, I'm creating a video tutorial series on this program. The first one, I just completed which shows you how to import FRD and ZMA files, as well as where to locate them. And how to use SPL Copy, if all else fails. I also help troubleshoot if your frd files are not importing properly. Here are the programs you will need:

    Passive Croosver Designer: Jeff Bagby's Software Page

    SPL Copy:
    SPL Copy - Speaker Frequency Response Automatic Trace Tool

    Here's a link to a playlist which contains all the videos in the series:
    Playlist: How to Design a Crossover - Passive...


    I currently have 6 videos in the series, I hope you enjoy and learn something. Please let me know if there is something else you want to learn. I'll try to post it when I can.
     
    Last edited: Aug 14, 2017
  2. Member 786053

    Member 786053
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    Alright guys I just finished the 7th video which talks about phase and how to calculate it in your crossover design. I hope this helps.

    Playlist: How to Design a Crossover - Passive...
     
  3. markymiles

    markymiles
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    Thanks for the Videos, very interesting.

    I notice you've used manufacturers specs/graphs for the importing. Do you ever do this using your own measurements from REW or similar.

    I would be keen to see this in video form if you do/are able to, in particular how to take the measurements you need.
     
  4. Member 786053

    Member 786053
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    That is a great idea. I'll have to try to do a video like that. I do use a UMIK1 and REW for those measurements. For the series I used the manufacturers data. I'll have to work on video for that.
     
  5. Petar Lagator

    Petar Lagator
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    Thank you for the great instructional videos, you saved my DIY !
     
  6. Member 786053

    Member 786053
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    You're Welcome! I am glad it helped!
     

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