Announcement

Collapse
No announcement yet.

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

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

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

    Originally posted by djg View Post
    diysoundgroup bought a bunch of FE 83s to go with some kits they will be bringing out.
    Wonderful! Any info on what design they will be doing? The Quarks, or something else?

    Comment


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

      Originally posted by ksneote View Post
      Wonderful! Any info on what design they will be doing? The Quarks, or something else?
      I believe they will be Quarks.
      Click here for Jeff Bagby's Loudspeaker Design Software

      Comment


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

        Jeff,

        A question, if you're still checking in with this thread...

        I've built two pair, and to say "very happy" would be a gross understatement... it's hard to believe there's so much quality sound coming from such petite enclosures.

        My pair sit on the desktop, and I wouldn't change a thing about 'em. The wife wanted hers flown from upper corners in her small (13' x 12' x 8' ceiling) office, and the gain from being in these corners lends a certain ...thickness, I suppose to the sound- Nora Jones, for example sounds fabulous on my Quarks but seems to have a head cold (or has put on a bunch of weight) played through the suspended set.

        I've been able to influence it a little with tone controls (those are running on a 2020A+) or by partially/heavily stuffing the port tube with PolyFill, but neither seems to materially improve the sound without b*ggering it in some other sense. I haven't run a sweep on them yet to isolate the frequency(ies) suffering this blooming.

        So my question, if you have a sec: if you were to re-shape the frequency response on these in that context, how would you attack it?

        These little guys are such naturals for being mounted this way (or under an eave on a patio) I'd suspect that others might ponder this same question... either way, thanks for your consideration!

        .
        Ed Henderson

        Comment


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

          Originally posted by ejh2854 View Post
          Jeff,

          A question, if you're still checking in with this thread...

          I've built two pair, and to say "very happy" would be a gross understatement... it's hard to believe there's so much quality sound coming from such petite enclosures.

          My pair sit on the desktop, and I wouldn't change a thing about 'em. The wife wanted hers flown from upper corners in her small (13' x 12' x 8' ceiling) office, and the gain from being in these corners lends a certain ...thickness, I suppose to the sound- Nora Jones, for example sounds fabulous on my Quarks but seems to have a head cold (or has put on a bunch of weight) played through the suspended set.

          I've been able to influence it a little with tone controls (those are running on a 2020A+) or by partially/heavily stuffing the port tube with PolyFill, but neither seems to materially improve the sound without b*ggering it in some other sense. I haven't run a sweep on them yet to isolate the frequency(ies) suffering this blooming.

          So my question, if you have a sec: if you were to re-shape the frequency response on these in that context, how would you attack it?

          These little guys are such naturals for being mounted this way (or under an eave on a patio) I'd suspect that others might ponder this same question... either way, thanks for your consideration!

          .
          Since the crossover is so simple there may not be a real simple solution. You can start by reducing the series resistor on the tweeter to about 5 ohms. The next step would be to lower the value of the inductor on the woofer to about .6 - .7 mH range. It's the kind of thing that might require a pretty different crossover to get it leveled out.
          Click here for Jeff Bagby's Loudspeaker Design Software

          Comment


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

            Acknowledged- thanks! ...the parts are cheap, and my labor even cheaper ;)
            Ed Henderson

            Comment


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

              Hmmm what happened to the original crossover photo. Just got my hands on the drivers and the crossover is gone.

              Comment


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

                Originally posted by violaplayer View Post
                Hmmm what happened to the original crossover photo. Just got my hands on the drivers and the crossover is gone.
                It still shows in the first post when I pull it up. It's right under the pic showing the can of paint. It's not there when you look?
                Click here for Jeff Bagby's Loudspeaker Design Software

                Comment


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

                  Sorry Jeff. My mistake. It works on my phone but is being filtered by my "administrator" on the computer I'm currently using. You know big brother and all.

                  Comment


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

                    I just finished two sets of the Quarks. Had the Fountec drivers on hand, thinking they would be useful for future small footprint projects. One set goes to my daughter, who when I asked what color she'd like, reminded me that her favorite color is red. I'll post a couple of photos for those that might be interested. A couple of observations -- these guys are really quite capable for such a small and simple design. Making the cutouts for recessed drivers, I discovered that the standard cut sizes on the router circle guide produced a very tight fit. So tight, in fact, that the Fountec drivers would have to be pressed in. That led me to another discovery, the aluminum cones are easily damaged. My thumbs slipped off as I was pressing the first driver in, and I bent the heck out of the cone. So I ended up ordering another driver, and making a curved sanding block sized just a little smaller than the opening, so I could enlarge them by sanding. My advice is to cut to the next larger hole size. The other observation I have is that making the crossover can be a bit of a challenge, since everything has to fit through that small hole. I ended up mounting all components (except for the I core inductor) on a small piece of perforated circuit board, and attaching to the side with double-sided tape. I'm very pleased with them --thanks to Jeff for the design.
                    Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                    Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                    Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                    Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                    Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                    NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                    Comment


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

                      Anyone try this with the FE85 yet? My wife just mentioned wanting some speakers for her computer at work and these would be perfect.

                      Also, is there a time frame for DIYSG offering these as a flatpack? Don't see it listed on there website yet.

                      Comment


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

                        Originally posted by Soundslike View Post
                        I just finished two sets of the Quarks. Had the Fountec drivers on hand, thinking they would be useful for future small footprint projects. One set goes to my daughter, who when I asked what color she'd like, reminded me that her favorite color is red. I'll post a couple of photos for those that might be interested. A couple of observations -- these guys are really quite capable for such a small and simple design. Making the cutouts for recessed drivers, I discovered that the standard cut sizes on the router circle guide produced a very tight fit. So tight, in fact, that the Fountec drivers would have to be pressed in. That led me to another discovery, the aluminum cones are easily damaged. My thumbs slipped off as I was pressing the first driver in, and I bent the heck out of the cone. So I ended up ordering another driver, and making a curved sanding block sized just a little smaller than the opening, so I could enlarge them by sanding. My advice is to cut to the next larger hole size. The other observation I have is that making the crossover can be a bit of a challenge, since everything has to fit through that small hole. I ended up mounting all components (except for the I core inductor) on a small piece of perforated circuit board, and attaching to the side with double-sided tape. I'm very pleased with them --thanks to Jeff for the design.
                        I ended up purchasing a 2 7/8" forstner bit from Grizzly to drill the hole with. I made some clearance on the inside of the baffle with a 45 degree router bit to aid in air movement. I think Jeff used a 3" hole and 1/2" material? I used 3/4" so I went ahead and made some more breathing room. Only managed to screw up one baffle




                        I'm going to be using a cool idea for some legs for the front, too.
                        Can't wait to hear them sing, getting close.

                        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


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

                          Originally posted by Soundslike View Post
                          I just finished two sets of the Quarks. Had the Fountec drivers on hand, thinking they would be useful for future small footprint projects. One set goes to my daughter, who when I asked what color she'd like, reminded me that her favorite color is red. I'll post a couple of photos for those that might be interested. A couple of observations -- these guys are really quite capable for such a small and simple design. Making the cutouts for recessed drivers, I discovered that the standard cut sizes on the router circle guide produced a very tight fit. So tight, in fact, that the Fountec drivers would have to be pressed in. That led me to another discovery, the aluminum cones are easily damaged. My thumbs slipped off as I was pressing the first driver in, and I bent the heck out of the cone. So I ended up ordering another driver, and making a curved sanding block sized just a little smaller than the opening, so I could enlarge them by sanding. My advice is to cut to the next larger hole size. The other observation I have is that making the crossover can be a bit of a challenge, since everything has to fit through that small hole. I ended up mounting all components (except for the I core inductor) on a small piece of perforated circuit board, and attaching to the side with double-sided tape. I'm very pleased with them --thanks to Jeff for the design.
                          Are you comfortable attaching the crossover with double-backed tape? That doesn't sound very secure.
                          Click here for Jeff Bagby's Loudspeaker Design Software

                          Comment


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

                            Originally posted by Jeff B. View Post
                            Are you comfortable attaching the crossover with double-backed tape? That doesn't sound very secure.
                            It's actually fairly secure, but to be honest, I'd rather use something more secure like hot glue. But it just looked too difficult to get the components into place with any accuracy if I applied the glue first. Here's how I constructed the crossover.
                            They are installed vertically, on one side of the enclosures, with the ends of both components resting on the bottom. The next photo shows the backside of the board.

                            And this photo shows how I installed them inside the enclosure.

                            And here's what the little guys look like.

                            Finally, a cautionary tale. Make sure your thumbs don't slip off when you're pressing the driver into the tight-fitting recess.
                            Attached Files
                            Last edited by Soundslike; 05-16-2015, 12:59 AM. Reason: Added photos
                            Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                            Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                            Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                            Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                            Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                            NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                            Comment


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

                              Very nice work Tom.
                              Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                              Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                              Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                              Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                              Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                              NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                              Comment


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

                                Highly recommend this design. Thanks Jeff...
                                Tritrix HT:http://techtalk.parts-express.com/sh...d.php?t=222519
                                Dayton 12" Subwoofer: http://techtalk.parts-express.com/sh...d.php?t=222930
                                Overnight Sensations: http://techtalk.parts-express.com/sh...d.php?t=223751
                                Cerberus sub: http://techtalk.parts-express.com/sh...hlight=cerebus
                                Duellatis: http://techtalk.parts-express.com/sh...d.php?t=224943
                                NTN's: http://techtalk.parts-express.com/sh...d.php?t=227902

                                Comment

                                Working...
                                X