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The Quarks - M.O.S.D. Computer Speaker

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  • #91
    Re: The Quarks - M.O.S.D. Computer Speaker

    I've been playing my first pair for about a week on mostly TV duty, and they sound great!

    I guess the best thing I can say is that they are perfectly voiced top to bottom, very good detail,
    and they can really fill up a room.
    Imaging and phantom center seem especially good. Pics soon.

    Q: Is any one working on a MTM version? If not, I'm seriously considering the project.

    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


    • #92
      Re: The Quarks - M.O.S.D. Computer Speaker

      I have all the parts for a MTM and would love to be in the shop cutting parts but I have no time... My goal is 3 mtm's for the fronts and the tm for surround. I don't really have room for a HT setup but for the price it is hard to go wrong. They really are nice speakers.

      Comment


      • #93
        Re: The Quarks - M.O.S.D. Computer Speaker

        I built 2 pairs at nearly the same time - a buddy commissioned a set, and my wife really needed a nice set of desktop speakers.

        He was planning on rattle-can spray of some sort, but when he saw the raw boxes with some sealcoat, he decided on a clear finish.
        I was planning on veneering my wife's pair. The closer I got to finishing his pair, the more I liked the BB grain and patterns.
        All the time I was finishing his pair, I kept hearing a voice say "amber or honey".... so that's what I did - bought some
        amber shellac for that tint, and it was darn perfect.

        Click image for larger version

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        I figured that since the boxes were so small, I'd better plan ahead!
        Managed to squeeze the crossover down (unwound a bunch from the $1 ferrite core coils), and hot glued it in.
        Click image for larger version

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        Used crimp on terminals for the drivers and terminals.
        Click image for larger version

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        Many thanks again to Jeff for an amazing little design!

        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


        • #94
          Re: The Quarks - M.O.S.D. Computer Speaker

          Originally posted by donradick View Post
          I built 2 pairs at nearly the same time - a buddy commissioned a set, and my wife really needed a nice set of desktop speakers.

          He was planning on rattle-can spray of some sort, but when he saw the raw boxes with some sealcoat, he decided on a clear finish.
          I was planning on veneering my wife's pair. The closer I got to finishing his pair, the more I liked the BB grain and patterns.
          All the time I was finishing his pair, I kept hearing a voice say "amber or honey".... so that's what I did - bought some
          amber shellac for that tint, and it was darn perfect.

          [ATTACH=CONFIG]56858[/ATTACH]
          [ATTACH=CONFIG]56859[/ATTACH]

          I figured that since the boxes were so small, I'd better plan ahead!
          Managed to squeeze the crossover down (unwound a bunch from the $1 ferrite core coils), and hot glued it in.
          [ATTACH=CONFIG]56860[/ATTACH]
          Used crimp on terminals for the drivers and terminals.
          [ATTACH=CONFIG]56861[/ATTACH]

          Many thanks again to Jeff for an amazing little design!
          Don, your speakers look real nice...
          and I REALLY like how you handled the crossover. What a compact space-saver, cool.
          I'm going to be working on a couple pair of my own soon,

          There's under 650 of the woofers left, get to it people!

          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


          • #95
            Re: The Quarks - M.O.S.D. Computer Speaker

            Originally posted by tomzarbo View Post
            Don, your speakers look real nice...
            and I REALLY like how you handled the crossover. What a compact space-saver, cool.
            I'm going to be working on a couple pair of my own soon,

            There's under 650 of the woofers left, get to it people!

            TomZ
            thanks Tom.
            These little fellas sound REALLY GOOD - people are going to kick themselves when the 83s sell out and
            they have to pay extra for the 85s.

            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


            • #96
              Re: The Quarks - M.O.S.D. Computer Speaker

              Building two pair as well, and just put the juice to set #1 a few hours ago... delighted!

              .
              Ed Henderson

              Comment


              • #97
                Re: The Quarks - M.O.S.D. Computer Speaker

                Yes, And I don't know if the 85 will offer the same level of performance in the bass.....
                Click here for Jeff Bagby's Loudspeaker Design Software

                Comment


                • #98
                  Re: The Quarks - M.O.S.D. Computer Speaker

                  Jeff - these look awesome, I'll need to grab a pair or two of woofers to try these out. Thanks for sharing the design.

                  For anyone else looking to build these with flush-mounted tweeters, you can do this easily with cheap hole saws. The four-pack for about $12 sold pretty much everywhere has the right ones for the nd20fa. Just make the larger hole first, about the depth of the flange. The diameter is the one just a hair smaller than the tweeter. ( the hole saw teeth protrude and will make up the difference). Then go through the same pilot hole with the one that fits over the tweeter body. Use a knife, screwdriver, or dremel to knock out the little ridge left over, and voila.
                  TM (RS125/TB25-302), TM RS150S / Vifa BC25SC06, RS150-4 / Vifa ML-TL, 3CR-AL Ultra Budget: Electric Blue TM, TMM, MTM, Dragonflies , Mounties: Mini HT Satellite,sub for minions

                  Comment


                  • #99
                    Re: The Quarks - M.O.S.D. Computer Speaker

                    New to the world of speaker building and figured this would be a good project given that I am in dire need of some speakers for my office. Speakers in the MacBook Pro just don't cut it!

                    Crossover question - I see two options offered by PE that meet the 1.0mH spec - 266-550 and 255-100. Which one is best fit for this project? I know size is an issue but the physical dimensions on the 266-550 are not listed so hard to compare on that basis.

                    Recommended part numbers for the tweeter resistor and capacitor? I think I have the right ones dialed in, but recommendations to confirm or adjust would be appreciated!

                    Sorry for the newbie questions. I checked out the sticky in the TT forum and unfortunately the crossover links are getting a lot of 404's. Crossover construction is my one big learning spot in this. If you have links to resources I'd be happy to educate myself more!

                    Comment


                    • Re: The Quarks - M.O.S.D. Computer Speaker

                      Either will work, the 255-100 only real difference is the size. So up to you. Plans call for the 266-550, and I think everyone has used that one, unless they found a cheaper option (buy-out coil, they could unwind). From memory, I think 266-550 is about 3" long and about 1-1/4" wide and tall. Working with this small of a box is a challenge all in itself, but Jeff did a great job limiting the part count and still resulted in a great sounding speaker.

                      If you have questions, just post them. You will get all the help you need.
                      Paul

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

                      Comment


                      • Re: The Quarks - M.O.S.D. Computer Speaker

                        unwinding 111 turns on this coil got me right on http://www.parts-express.com/ferrite...-watt--269-303.
                        I had the same results on 3 so far. I have the luck of having a very high end lrc at work that I used to measure my coils.
                        edit: this is for the 1mh iron core. I was also lucky enough to wrap the take off into the other air core. so total inductors only cost me $5 for pair of speakers.

                        Comment


                        • Re: The Quarks - M.O.S.D. Computer Speaker

                          Originally posted by Tim_Staton View Post
                          I see two options offered by PE that meet the 1.0mH spec - 266-550 and 255-100. Which one is best fit for this project? I know size is an issue but the physical dimensions on the 266-550 are not listed so hard to compare on that basis.
                          Ed Henderson

                          Comment


                          • Re: The Quarks - M.O.S.D. Computer Speaker

                            If anybody needs specific part numbers, this is a cart for 2 pairs with the buyout ferrite core coil.
                            IME, unwinding it is pretty easy, it's much smaller than the (massive) iron core coil, and very easy to hot glue inside the cab

                            Hope this helps!

                            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


                            • Re: The Quarks - M.O.S.D. Computer Speaker

                              FWIW I needed a compact and (hopefully) goof-proof amp to drive the set I made for the missus, so I picked up a 2020A+ from our friends at PE:

                              http://www.parts-express.com/lepai-l...upply--310-300

                              My first experience with these little Lepai amps, and I'm impressed; drives the Quarks with plenty of n*ts for playing very loudly, and sounds great... a no-brainer for $27!

                              .
                              Ed Henderson

                              Comment


                              • Re: The Quarks - M.O.S.D. Computer Speaker

                                Originally posted by donradick View Post
                                Hope this helps!
                                Very helpful in making sure I got the correct resistor and capacitor. Thanks! Ordered a set and am looking forward to opening pandoras box!

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