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3way design advice/crossover help!

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  • 3way design advice/crossover help!

    looking for advice and opinions on a 3way speaker im building.
    I am using the
    usher 9950 tweeters 8 ohm
    vifa ne 180w mids 8 ohm

    looking for some crossover recommendations, and a good suggestion for a 10" woofer to go with these.

    was also thinking of doing maybe 2 - 8" instead of 10"

    any advice and suggestion are appreciated.
    thanks

    woofer can be up to 3.0 ft3 enclosure.
    these will be purely musical speakers.

  • #2
    Re: 3way design advice/crossover help!

    Do you have any design experience doing crossovers? If you don't you are looking at a very steep learning curve by starting with a 3 way with what are pretty high quality drivers. Those drivers deserve a properly implemented design.

    Do you already own those drivers?

    If you don't (and perhaps even if you do) I would strongly consider an existing design from an experienced designer. If I were looking for a 10" 3 way I would look no further than the Tarkus from Paul C. If you want arguably a little higher end drivers and a larger speaker with a 12" woofer you could check out the SB12.3 at madisound. The Finalists are a very nice standmount 3 way that is highly regarded and IIRC it uses your mid.

    https://sites.google.com/site/undefinition/tarkus

    http://www.zaphaudio.com/SB12.3/

    http://speakerdesignworks.com/Finalists_1.html

    Originally posted by musica14 View Post
    looking for advice and opinions on a 3way speaker im building.
    I am using the
    usher 9950 tweeters 8 ohm
    vifa ne 180w mids 8 ohm

    looking for some crossover recommendations, and a good suggestion for a 10" woofer to go with these.

    was also thinking of doing maybe 2 - 8" instead of 10"

    any advice and suggestion are appreciated.
    thanks

    woofer can be up to 3.0 ft3 enclosure.
    these will be purely musical speakers.
    Loren Jones

    http://techtalk.parts-express.com/sh...-sound-drivers

    http://techtalk.parts-express.com/sh...for-live-sound

    Comment


    • #3
      Re: 3way design advice/crossover help!

      I have never built a crossover before.
      that being said I really want to build my own speakers not a kit.
      I understand that would be easier, but its not going to teach me anything about crossovers
      because there already built. correct?
      I have already started building. I have done a lot of research and understand it wont be easy.
      I really would like to learn, because I plan on building many designs.

      Comment


      • #4
        Re: 3way design advice/crossover help!

        Intro:
        http://hyperphysics.phy-astr.gsu.edu...dio/cross.html
        "Not a Speaker Designer - Not even on the Internet"
        “Pride is your greatest enemy, humility is your greatest friend.”
        "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter."

        Comment


        • #5
          Re: 3way design advice/crossover help!

          Kits may or may not come with assembled crossovers. You can get many kits either way. The crossover assembly is not the difficult part. It is the designing of the crossover that is difficult. It takes significant knowledge but is obviously something that many people learn. The crossover for a three way design is much more difficult than for a two way. If you were going to get into crossover design I would look at a two way as a place to start. Better yet, build an established design. Learn all you can during that process then after that jump in to designing your own. My $.02 fwiw

          Originally posted by musica14 View Post
          I have never built a crossover before.
          that being said I really want to build my own speakers not a kit.
          I understand that would be easier, but its not going to teach me anything about crossovers
          because there already built. correct?
          I have already started building. I have done a lot of research and understand it wont be easy.
          I really would like to learn, because I plan on building many designs.
          Loren Jones

          http://techtalk.parts-express.com/sh...-sound-drivers

          http://techtalk.parts-express.com/sh...for-live-sound

          Comment


          • #6
            Re: 3way design advice/crossover help!

            cant one use a crossover calculator to determine what
            caps, inductors, and resistors they need for the drivers?
            I know how a crossover works, just never done the calculations.
            I thought there was programs for these calculations like:
            x-over 3
            lspcad
            soundeasy
            etc.

            Comment


            • #7
              Re: 3way design advice/crossover help!

              Here's some current software, Jeff Bagby's is popular.

              http://audio.claub.net/software.html

              Comment


              • #8
                Re: 3way design advice/crossover help!

                Originally posted by musica14 View Post
                ...I thought there was programs for these calculations like:...
                Yes their are.
                Remember however that loudspeaker are electromechanical devices, and some crossover programs are based solely upon mathematical transfer functions on the electrical signal alone based upon theoretical ideal behaviour.
                The reactive nature of speakers and the acoustic aspects has to be taken into consideration along the with conjugate effects of the circuit attached.
                That means modeling rather than simple calculations.
                "Not a Speaker Designer - Not even on the Internet"
                “Pride is your greatest enemy, humility is your greatest friend.”
                "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter."

                Comment


                • #9
                  Re: 3way design advice/crossover help!

                  http://www.torean.dk/artikel/Crossover.pdf
                  http://projekter.aau.dk/projekter/fi...timization.pdf
                  "Not a Speaker Designer - Not even on the Internet"
                  “Pride is your greatest enemy, humility is your greatest friend.”
                  "If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter."

                  Comment


                  • #10
                    Re: 3way design advice/crossover help!

                    Click image for larger version

Name:	phone 028.jpg
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ID:	1157742I really do appreciate all the help guys.
                    here are a few pics of what im working on.

                    Comment


                    • #11
                      Re: 3way design advice/crossover help!

                      can you take one of these calculators to get a base of where to start and then tweek it from there?

                      Comment


                      • #12
                        Re: 3way design advice/crossover help!

                        Originally posted by musica14 View Post
                        can you take one of these calculators to get a base of where to start and then tweek it from there?
                        For best results, you will want to get measurement equipment. With these raw measurements, you can make a x-over by trial and error, (The hard way for most people), or use software to design the x-over.

                        You could make a WAG and have a speaker that functions, but its response will not be very smooth. You might still like it, but it will sound much better with a well designed x-over.

                        Comment


                        • #13
                          Re: 3way design advice/crossover help!

                          Wag?

                          Comment


                          • #14
                            Re: 3way design advice/crossover help!

                            Originally posted by musica14 View Post
                            Wag?
                            Wild #$$ Guess.

                            Comment


                            • #15
                              Re: 3way design advice/crossover help!

                              Click image for larger version

Name:	PHONE 305.jpg
Views:	1
Size:	872.1 KB
ID:	1157743

                              Comment

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