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  • W6 sub

    Click image for larger version

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    But for a 3 inch diameter port, the required length was 66 cm (26 inches).
    Lots of bends to get that working with PVC (my usual choice for ports)

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    But now the box was really getting too big.

    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

    Tangband W6-sub

  • #2
    Re: W6 sub

    So I tried a bunch of tunings and box sizes, and suddenly, 14 Liters (70 watts with a SA70 amp) with a 2.5 inch port started to look real good:

    Click image for larger version

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    At first glance, maxspl and excursion could be an issue:

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    as well as W6 excursion / frequency

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    Last edited by donradick; 07-14-2015, 09:42 AM. Reason: added content

    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

    Tangband W6-sub

    Comment


    • #3
      Click image for larger version

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      Since I had . 5 inch BB unbraced about 12.5 x 10.5 inches for the sides and top, there was a bit of ringing on a knuckle rap. I decided that a cross brace was in order.

      Click image for larger version

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      Last edited by donradick; 07-14-2015, 09:48 AM. Reason: added content

      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

      Tangband W6-sub

      Comment


      • #4
        Click image for larger version

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        Probably should have painted the inside of the slot black. Oh well.

        A similar view for the back and top.

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        Last edited by donradick; 07-14-2015, 09:53 AM. Reason: added content

        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

        Tangband W6-sub

        Comment


        • #5
          Re: W6 sub

          Very nice build and very methodical process to get to the finished product. That is a pretty imposing little driver! Are you going to do some in-room measurements? maybe compared to the Voxel?
          Nice job on the finish too. Did you use raw veneer or paper-backed?
          Paul

          The "SB's" build page
          http://techtalk.parts-express.com/sh...-4-(pic-heavy)

          Comment


          • #6
            Re: W6 sub

            Originally posted by bullittstang View Post
            Very nice build and very methodical process to get to the finished product. That is a pretty imposing little driver! Are you going to do some in-room measurements? maybe compared to the Voxel?
            Nice job on the finish too. Did you use raw veneer or paper-backed?
            Thanks Paul -

            I actually wasn't planning on in-room measurements, but I will now!

            Pretty happy with the finish - about 6 coats of shellac on the (paper backed) veneer and 1 coat of AquaZar water=based poly.
            (You know the drill "It looks good enough and I want to play this tonight!")

            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

            Tangband W6-sub

            Comment


            • #7
              Re: W6 sub

              That's a nice project! It looks like you may have crossed over from cool 'mini' sub to a full-fledged hairy-chested subwoofer, even though it's still compact.
              That little TB'er is a beast!
              Oh, did you use the neo or Ferrite version? I wasn't sure based on the comparison to the Voxel which uses the ferrite driver.

              TomZ
              *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
              *Part 2 *Gluing multiple curved laminations of HDF *Cello's Speaker Project Page

              *Building the "Micro-B 2.1 Plate Amplifier -- Part 1 * Part 2 * Part 3 * Part 4 * * Part 5 'Review' * -- Assembly Instructions PDF

              Comment


              • #8
                Re: W6 sub

                Originally posted by tomzarbo View Post
                That's a nice project! It looks like you may have crossed over from cool 'mini' sub to a full-fledged hairy-chested subwoofer, even though it's still compact.
                That little TB'er is a beast!
                Oh, did you use the neo or Ferrite version? I wasn't sure based on the comparison to the Voxel which uses the ferrite driver.

                TomZ
                Thanks Tom!

                I used the ferrite version - the price difference could not be beat vs the neo.

                As indicated, I will probably make at least one more of these.
                I've got friends who can't stop drooling at Fry's bargains - looking for a 12" sub with 200 watts for $100.
                I'll bet this little guy will blow away any of those commercial mass-market subs.

                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

                Tangband W6-sub

                Comment


                • #9
                  Re: W6 sub

                  Here's Omnimic comparison of my W6 sub vs a stock voxel with 1/24 octave resolution.
                  Played OM Track 2, hope that's correct.

                  I don't know if this is the correct procedure - I set a level of 85 dB at one meter,
                  then measured close-miked on each system. It surprised me that the W6 (in Blue) was not
                  more flat from 30 - 100, but in any case you can see the Voxel (in Red) drop
                  off below 60 Hz. Still, the Voxel sort of shows an EBS alignment, with good output
                  well into the 30s.

                  Subjectively, the Voxel sounded like was working a bit hard during the test, while the W6 was shrugging
                  at the challenge.

                  Click image for larger version

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                  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

                  Tangband W6-sub

                  Comment


                  • #10
                    Re: W6 sub

                    Best writeup in many moons. Very interesting project!

                    Comment


                    • #11
                      Re: W6 sub

                      I could be wrong, but I think "track 4" is the Bass-sweep on the disk. Not sure if it matters though, since these aren't really playing anything over 150-Hz anyway.
                      That is a nice smooth "Blue" curve, with an actual "port tuning" dip showing at about 25-Hz. Looks like a very nice and solid sounding sub build.
                      You have peaked my interest.
                      Paul

                      The "SB's" build page
                      http://techtalk.parts-express.com/sh...-4-(pic-heavy)

                      Comment


                      • #12
                        Re: W6 sub

                        Thanks guys.

                        When PE cranked up the "Speaker Design Team" project, I realized that my documentation was woefully inadequate, so
                        I learned Sketchup and tried to put more details into the build notes. One aspect of this hobby that always surfaces
                        in any project is the revisions and alterations and changing decisions until it's finished.
                        I tried to capture some of that. But, sheesh, after a number of years at this hobby, I'm still in awe of the
                        writeups that some guys produce.

                        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

                        Tangband W6-sub

                        Comment


                        • #13
                          Re: W6 sub

                          Nice build and a great read!

                          BTW, the W6 is out of stock already.

                          Cheers, Wayne

                          Comment


                          • #14
                            Re: W6 sub

                            This project looked interesting to me and I have just started to learn Sketchup and used this as practice. An attempt was made to follow your dimensions in the text and I came up with some slightly different numbers.Click image for larger version

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                            Attached are a couple of sketches for your review.

                            Comment


                            • #15
                              Re: W6 sub

                              The venerable 1139 claims another fan!!!
                              Love these little mongrels,
                              Wolf
                              "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                              "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                              "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                              "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                              *InDIYana event website*

                              Photobucket pages:
                              http://photobucket.com/Wolf-Speakers_and_more

                              My blog/writeups/thoughts here at PE:
                              http://techtalk.parts-express.com/blog.php?u=4102

                              Comment

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