Announcement

Collapse
No announcement yet.

Time for some Ansonica - a new design for Jagman's theater

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Time for some Ansonica - a new design for Jagman's theater

    By request, this one's for Jagman.

    Fronts (the Ansonica)
    Max total height, 36"
    Use the new Exodus Anarchy, to be a 2.5way TMM.

    Surrounds (the Marsala):
    Use what I learned on my own surrounds

    Selected tweeter:
    SB-Acoustics SB29RDC-C000-4

    Though I don't know for sure how the Anarchy does as a midrange, we'll find out. I'm going to leave the baffle on my test box loose so I can swap it out for a different tweeter + midrange if I find I really don't like the midrange on the Anarchy. We'll see.

    Some quick modeling suggests a box 8.5x15x34 with a 1.5" baffle and a port tuned to ~25Hz will work quite nicely (you can tune lower the less series impedance is in front of the woofers so we'll have to see where the crossover ends up). Going to slant this one. I think chamfers, and I'm pondering whether to go with the latest fad in the "Avalon" style...

    More info here as things progress, as usual.

    Box design and info:
    2.5" diameter port should be ~12-13 inches long.
    3" diameter port should be ~18" long
    1x7.5" slot port should be ~18.5" long (equivalent to ~3.1" diameter)


    Series Crossover:
    Note: C5 should be 10uF not 12. I'll update the pic soon as I get the chance.


    BOM:
    Capacitors
    25uF
    16uF
    14uF
    10uF
    4uF

    (optional) 47uF

    Inductors
    1.2mH 14ga (.24ohm)
    .39mH 14ga (.12ohm)

    2.7mH 16ga (.60ohm)

    .91mH 18ga (.40ohm)
    .33mH 18ga (.26ohm)

    (optional) .5mH 20ga

    Resistors
    8ohm
    4ohm
    2.5ohm

    (optional 5ohm)

    ------------------------------------

    Parallel Crossover:



    BOM:
    Capacitors
    15uF
    14uF
    12uF
    10uF
    4.5uF

    (optional) 47uF

    Inductors
    1.2mH 14ga (.24ohm)

    3.6mH 16ga (.70ohm)
    .3mH 16ga (.16ohm)

    .36mH 18ga (.27ohm)

    (optional) .5mH 20ga

    Resistors
    8ohm
    4ohm
    2.5ohm

    (optional additional 8ohm)

    Response:
    Black is the series summed response, yellow is the parallel summed response.

    Red/blue/pink are series individual driver response(s).

    The dip at 3k is diffraction induced. This is measured without the chamfer, so that should get better.

    This is with a LRC to flatten impedance, otherwise it peaks up to about 12ohm in the 1200Hz-ish range, phase gets up to ~+20deg and -30deg at 400Hz and 2200Hz respectively. So rather benign either way. Solidly above 4ohm all the way.
    Last edited by cjd; 17 November 2011, 16:42 Thursday.
    diVine Sound - my DIY speaker designs at diVine Audio

  • #2
    Sounds like a fun project, cjd. So this will be a diminuitive tower, with a slanted front baffle? I like the sound of it.

    I'm not familiar with the Anarchy driver, I'll have to take a look at it.
    Dan N.

    Comment


    • #3
      Mains: Box design

      Modeled box response with 1.5ohm series impedance in front of the mid-woofers.

      diVine Sound - my DIY speaker designs at diVine Audio

      Comment


      • #4
        Originally posted by cjd
        By request, this one's for Jagman.

        Fronts (the Ansonica)
        Max total height, 36"
        Use the new Exodus Anarchy, to be a 2.5way TMM.

        Surrounds (the Marsala):
        Use what I learned on my own surrounds

        Selected tweeter:
        SB Acoustics SB29RDCN-C000-4

        Though I don't know for sure how the Anarchy does as a midrange, we'll find out. I'm going to leave the baffle on my test box loose so I can swap it out for a different tweeter + midrange if I find I really don't like the midrange on the Anarchy. We'll see.

        Some quick modeling suggests a box 8.5x15x34 with a 1.5" baffle and a port tuned to ~25Hz will work quite nicely (you can tune lower the less series impedance is in front of the woofers so we'll have to see where the crossover ends up). Going to slant this one. I think chamfers, and I'm pondering whether to go with the latest fad in the "Avalon" style...

        More info here as things progress, as usual.
        Personally, I'd stay away from any faddish or trendy design stuff- causes no end of aggravation, and then next year, it's out of style anyway. :W

        Well, interesting, adding series resistance- a more time honored technique than flux capacitors, for sure! Have you done any testing on these drivers yet? How does the distortion at moderate levels look, not just when you push them? They seem a good value, hope to see your results soon.
        the AudioWorx
        Arvo Pärt
        Isiris MLBL
        Modula MT
        Natalie P
        M8ta
        Modula Neo D CC
        Ardent
        Modula MT XE
        Modula Xtreme
        Isiris
        Wavecor Ardent

        SMJ
        Minerva Monitor
        Calliope
        Ardent D

        In Development...
        Isiris Mk II updates
        Calliope CC
        Obi-Wan
        Saint-Saëns Symphonique
        Modula PWB
        Calliope CC Supreme


        Resistance is not futile, it is Volts divided by Amperes...
        Just ask Mr. Ohm....

        Comment


        • #5
          Nope. No info on the drivers yet but I'll see what I can get out of them. More specific distortion data would be my first foray into that arena, but never too late to start eh?

          As for series resistance, it's going to happen no matter what you do unless you use no wire, and definitely no inductor. If there is none you can tune as low as ~20Hz (though 22Hz seems the sweet spot) in this box... for a 6.5" driver (er, I swear that's a 7"...)

          Some quick thoughts on box, not sure... I can already see some things to change here... one thing at a time! Just sketching right now.
          Attached Files
          diVine Sound - my DIY speaker designs at diVine Audio

          Comment


          • #6
            Originally posted by cjd
            Nope. No info on the drivers yet but I'll see what I can get out of them. More specific distortion data would be my first foray into that arena, but never too late to start eh?



            Some quick thoughts on box, not sure...
            I like it! Will be following this, especially to see how the drivers work out- if they're OK, knowing you, I'm pretty sure the design will be fine!
            the AudioWorx
            Arvo Pärt
            Isiris MLBL
            Modula MT
            Natalie P
            M8ta
            Modula Neo D CC
            Ardent
            Modula MT XE
            Modula Xtreme
            Isiris
            Wavecor Ardent

            SMJ
            Minerva Monitor
            Calliope
            Ardent D

            In Development...
            Isiris Mk II updates
            Calliope CC
            Obi-Wan
            Saint-Saëns Symphonique
            Modula PWB
            Calliope CC Supreme


            Resistance is not futile, it is Volts divided by Amperes...
            Just ask Mr. Ohm....

            Comment


            • #7
              Originally posted by JonMarsh
              I like it! Will be following this, especially to see how the drivers work out- if they're OK, knowing you, I'm pretty sure the design will be fine!
              thanks for the vote of confidence

              I think the plain baffle makes the most sense as it's far and above the simplest construction and will make changing the baffle out to make room for a mid easier too. But the extra tilt may help align the tweeter both in the time domain and with the ear...

              Maybe I should make these an omni tweeter... (top mounted) :twisted:
              diVine Sound - my DIY speaker designs at diVine Audio

              Comment


              • #8
                HEY! I thought we had talked him into In-Khans? What's up with this? :P

                Interesting project. I hope that I'll be able to listen to them some day. (I don't think you've had your fill of listening to Damien Rice yet. :P)
                - Ryan

                CJD Ochocinco! ND140/BC25SC06 MTM & TM
                CJD Khanspires - A Dayton RS28/RS150/RS225 WMTMW
                CJD Khancenter - A Dayton RS28/RS150/RS180 WTMW Center

                Comment


                • #9
                  Only a little bit of tweek on the baffle layout. The tweeter center should be 3.5" from the top, centered horizontally (before chamfer) with a 3/4" chamfer on the top and sides. I think box width goes up to 9" due to the size of these drivers, they're just over 7" diameter. Box height will remain at 34" (which will push it close to 36" with spikes). Tweeter to top mid-woofer C2C should be 7.5"

                  Roundover introduces less noise in the diffraction profile but takes a bigger roundover to manage similar control over diffraction - this nets < +/- 1dB, 3/4" roundover is out 2dB. And a little felt will control a lot of the hash.

                  I suspect final box tuning should target about 24Hz, with -3dB being at about 22Hz in-room. I'm not decided on whether to front or rear port at this stage.
                  diVine Sound - my DIY speaker designs at diVine Audio

                  Comment


                  • #10
                    welcome to HTGuide, where we spend more time derailed than on-topic. :P

                    It's fun, too.

                    This is tentatively running series-ish in the world of crossovers. Though I hardly trust the data I'm working with right now so... :P It's been too long since I did so much pre-work in sim to try to get a feel for drivers.
                    diVine Sound - my DIY speaker designs at diVine Audio

                    Comment


                    • #11
                      Oh, see, this isn't MY build anyhow.

                      I might have to go purple though...

                      And I'm thinking a hybrid translam style approach to get vertical stripe on the whole front baffle and top... Only need 10 "3/4" layers (18mm) and one 1/2 layer (12mm) I think...

                      Whooo. ok, my head is spinning. Too ambitious.
                      diVine Sound - my DIY speaker designs at diVine Audio

                      Comment


                      • #12
                        Originally posted by cjd
                        Oh, see, this isn't MY build anyhow.

                        I might have to go purple though...

                        And I'm thinking a hybrid translam style approach to get vertical stripe on the whole front baffle and top... Only need 10 "3/4" layers (18mm) and one 1/2 layer (12mm) I think...

                        Whooo. ok, my head is spinning. Too ambitious.

                        Wow. Colorful. And I was just trying to get used to the Canary yellow speakers by "normalizing" them against something I'm familiar with, a Yellow NSX. Purple will take more work... Deep Purple?


                        I think we need Evil Twin to convince C that's the speaker configuration (we) HE wants to build.

                        The "chancellor" has "informed" me I'm to forget this proposal and discussion, that there IS another who has this task and vision- we all know who that is...

                        His suggestion is my command...

                        We now return this thread to your normally scheduled programming...
                        the AudioWorx
                        Arvo Pärt
                        Isiris MLBL
                        Modula MT
                        Natalie P
                        M8ta
                        Modula Neo D CC
                        Ardent
                        Modula MT XE
                        Modula Xtreme
                        Isiris
                        Wavecor Ardent

                        SMJ
                        Minerva Monitor
                        Calliope
                        Ardent D

                        In Development...
                        Isiris Mk II updates
                        Calliope CC
                        Obi-Wan
                        Saint-Saëns Symphonique
                        Modula PWB
                        Calliope CC Supreme


                        Resistance is not futile, it is Volts divided by Amperes...
                        Just ask Mr. Ohm....

                        Comment


                        • #13
                          Originally posted by cjd
                          Oh, see, this isn't MY build anyhow.

                          I might have to go purple though...

                          And I'm thinking a hybrid translam style approach to get vertical stripe on the whole front baffle and top... Only need 10 "3/4" layers (18mm) and one 1/2 layer (12mm) I think...

                          Whooo. ok, my head is spinning. Too ambitious.
                          I didn't think Jagman was local to us? Who's building the boxes?
                          - Ryan

                          CJD Ochocinco! ND140/BC25SC06 MTM & TM
                          CJD Khanspires - A Dayton RS28/RS150/RS225 WMTMW
                          CJD Khancenter - A Dayton RS28/RS150/RS180 WTMW Center

                          Comment


                          • #14
                            Proportioned up and stuff.



                            I plan to make the rear panel removable here, and for a more traditional construction the top would just be normal 3/4" thick.

                            Braces could (and may be) 1/2" - the lower one needs to support the port.

                            There's room in there for the Aurasound NSW2-326-8AT, should be able to do everything but route a through-hole on mine just in case... But I doubt it would be needed.
                            Attached Files
                            diVine Sound - my DIY speaker designs at diVine Audio

                            Comment


                            • #15
                              Originally posted by ---k---
                              I didn't think Jagman was local to us? Who's building the boxes?
                              I have an intended recipient for these... I will, in this case, be building myself a pair.
                              diVine Sound - my DIY speaker designs at diVine Audio

                              Comment

                              Working...
                              X