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Anarchy Exodus 4 + RS100P-8 + SB19

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  • Anarchy Exodus 4 + RS100P-8 + SB19

    I'm in the midst of a small 3-way monitor build with the drivers stated in the title. The idea is a stand-mounted 3-way with an open back for the mid:

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    The tweeter and mid are on a baffle that is 15 degrees from that of the woofer. Why did I did I design it this way? I have no idea, but somehow felt compelled to to do so ;) I guess the aesthetics appealed to me.

    Anyway got the boxes built and popped in the drivers to take measurements:

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    Fired up WinPCD, latest version 1.5, and got to work. First I was eager to find the acoustic offsets, given the baffle design. Results are here.

  • #2
    Re: Anarchy Exodus 4 + RS100P-8 + SB19

    XO freq at 400Hz and 3500Hz seemed to work best. Here are the reverse nulls; and then frequency response (black) with power response (pink):

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    Now Impedance and Transfer Functions:

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    The network looks like this:

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    11 parts, 12 with the small parallel cap on the woofer inductor for the tank circuit.

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    • #3
      Re: Anarchy Exodus 4 + RS100P-8 + SB19

      Finally, here is the newest feature from WinPCD, the polar averages:

      Click image for larger version

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      Now the off axis response does not look quite right. I was expecting to get falling responses as one moves further off axis and higher in frequency. I was wondering if phase info above 20KHz is required?

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      • #4
        Re: Anarchy Exodus 4 + RS100P-8 + SB19

        Subscribed!
        Kenny

        http://www.diy-ny.com/
        DIY NY/NJ 2014 https://www.youtube.com/watch?v=FGwA...ature=youtu.be
        Man does not live by measurements alone, a little music helps.

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        • #5
          Re: Anarchy Exodus 4 + RS100P-8 + SB19

          Looking good John, looking forward to more.
          Some people are addicted to Vicodin. I'm addicted to speaker building.

          The Chorales - Usher 8945A/Vifa XT25TG Build
          ESP Project 101 Lateral MOSFET Amplifier
          LM4780 Parallel Chipamp
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          The Renditions - Active/Passive Towers

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          • #6
            Re: Anarchy Exodus 4 + RS100P-8 + SB19

            The off axis response looks like you didn't put in the driver diameter for the tweeter, if I had to guess.
            Audio: Media PC -> Sabre ESS 9023 DAC -> Behringer EP2500 -> (insert speakers of the moment)
            Sites: Jupiter Audioworks - Flicker Stream - FRD Consortium Archive - Proud Member of Midwest Audio Club

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            • #7
              Re: Anarchy Exodus 4 + RS100P-8 + SB19

              Very nice!
              Bet it sounds awesome.

              I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
              "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

              High value, high quality RS150/TB28-537SH bookshelf - TARGAS NLA!
              SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM
              My Voxel min sub Yet-another-Voxel-build

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              • #8
                Re: Anarchy Exodus 4 + RS100P-8 + SB19

                This makes me want to revisit a horizontal monitor, again. Great build!
                Don't listen to me - I have not sold any $150,000 speakers.

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                • #9
                  Re: Anarchy Exodus 4 + RS100P-8 + SB19

                  Thanks Guys. I had build pics, but lost them due to a corrupt microSD card in my camera :-( I'll see if I can recover some of them with software and if successful will post more pics.

                  Originally posted by JasonP View Post
                  The off axis response looks like you didn't put in the driver diameter for the tweeter, if I had to guess.
                  I think that must be it. I didn't enter any driver diameters at all into winPCD, but of course that must be needed. Will give that a shot tonight.

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                  • #10
                    Re: Anarchy Exodus 4 + RS100P-8 + SB19

                    Yup, I missed the section where driver diameters are entered, AND you have to press the Driver Directivity Active button too to enable this functionality. Here is a screenshot :

                    Click image for larger version

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                    When I did this, I got results more in line with expectations:

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                    Phew...

                    Comment


                    • #11
                      Re: Anarchy Exodus 4 + RS100P-8 + SB19

                      Fortunately I was able to recover some of the lost photos from the build phase (from a corrupt microSD card) and thought I would share in case there was any interest. First up is the baffle and side panel which together have two 15 degree angle joins. Since this is problematic for gluing and clamping I decided to use pocket hole joinery. I first did a proof of concept with spare MDF and then the real thing with the baffles panels already cut with driver holes:

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                      • #12
                        Re: Anarchy Exodus 4 + RS100P-8 + SB19

                        The next steps were gluing the woofer box panels onto the baffle, which then became the meat/filling in a Baltic Birch sandwich (no photo). This left me with large sections of BB overhang over the tweeter+mid panels. Too big to route down, so used a saw with a piece of MDF as a guide.

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                        Once down to manageable size, used the router with flush trim bit all around. Here is another shot of the assembled but unfinished speaker.

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                        After crossover and voicing is done (probably a few weeks away still), I plan to finish the MDF baffle and panels with Duratex, in a DIY-tinted color. Thinking of going for chocolate brown or thereabouts. The BB will be finished unstained with many layers of wipe-on gel poly.

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                        • #13
                          Re: Anarchy Exodus 4 + RS100P-8 + SB19

                          Originally posted by jclin4 View Post
                          [ATTACH=CONFIG]60861[/ATTACH]
                          What is that?

                          I was under the impression that using handtools to build loudspeakers could be considered grounds for banishment to a small iceberg shared briefly with hungry polar bears on the Bering Sea. Or it would seem so.




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                          "Our Nation’s interests are best served by fostering a peaceful global system comprised
                          of interdependent networks of trade, finance, information, law, people and governance."
                          - from the October 2007 U.S. Naval capstone doctrine
                          A Cooperative Strategy for 21st Century Seapower
                          (a lofty notion since removed in the March 2015 revision)

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                          • #14
                            Re: Anarchy Exodus 4 + RS100P-8 + SB19

                            :D

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                            • #15
                              Re: Anarchy Exodus 4 + RS100P-8 + SB19

                              I've seen the Anarchy's used in several builds but can't seen to find them for sale anywhere on the web.
                              Is there something I'm missing?

                              Thanks,

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