Announcement

Collapse
No announcement yet.

"MoZi" A Sealed 2 way design

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

  • #16
    Does anyone have a technical spec sheet for the AST2560 faceplate? I have access to a University 3D printing lab, and I could get the housing for the tweeter printed off, but was hoping to align the mounting holes. The PE spec sheet just gives the outside dimensions.

    Comment


    • #17
      Originally posted by Ironman129 View Post
      Does anyone have a technical spec sheet for the AST2560 faceplate? I have access to a University 3D printing lab, and I could get the housing for the tweeter printed off, but was hoping to align the mounting holes. The PE spec sheet just gives the outside dimensions.
      Even Aurum Cantus doesn't show the dimensional drawing.
      R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio

      Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51


      95% of Climate Models Agree: The Observations Must be Wrong
      "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

      Comment


      • #18
        Any updates on this? It looks very promising.

        Comment


        • #19
          Funny you ask that question.
          I just got the first set of proper data to make a 1st attempt at a crossover.
          These will be used in a TV installation so there will be some baffle enhancement which will bring up the range below 700Hz in the picture you see below.

          Click image for larger version

Name:	1st attempt.jpg
Views:	1
Size:	181.2 KB
ID:	1375971
          R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio

          Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51


          95% of Climate Models Agree: The Observations Must be Wrong
          "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

          Comment


          • #20
            Pete

            What is the function of the 15 ohm resistor in the tweeter circuit?

            Comment


            • #21
              Originally posted by skatz View Post
              Pete

              What is the function of the 15 ohm resistor in the tweeter circuit?
              It serves as padding and along with the 1.5uF cap, EQ shaping of the response.
              Here's what the raw response and transfer function looks like.
              Click image for larger version

Name:	tweeter XO.jpg
Views:	1
Size:	117.9 KB
ID:	1376012
              R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio

              Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51


              95% of Climate Models Agree: The Observations Must be Wrong
              "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

              Comment


              • #22
                Since Pete was making progress on the XO, I figured I better get moving with the cabs. R/L are sealed at 0.3cf and the CC is sealed at 0.6cf. There was some issues with the thickness of the BB ply. ended up going with bbb grade and I am happy I did. No visible voids and it looks nice and uniform. Should be able to glue everything up tomorrow, then it will just be sanding and polyurethane.

                Comment


                • #23
                  I learned from another project that you should regularly clamp when gluing layers together. I did every 3 layers on the R/L and every 2Layers on the CC. Still think I am going to nee to seal inside and out.

                  Comment


                  • #24
                    Coming together nicely! That looks pretty good for a first run of the crossover, nice job!

                    Comment


                    • #25
                      Got a couple hours of sanding in after the cabs were glued up. Took a little bit to get all the burn marks out from the CNC router, but they are looking pretty nice. I plan on keeping them as natural looking as possible. Thinking about a danish oil. I am going for the "Migico Mini" look. Anyone use Danish Oil on Baltic Birch? other recommendations?

                      Comment


                      • #26
                        what are you planning to use to seal the cabs?

                        Comment


                        • #27
                          Water based semi gloss varnish, about 4 coats....

                          Comment


                          • #28
                            Originally posted by ani_101 View Post
                            Water based semi gloss varnish, about 4 coats....
                            Those look nice! I am trying to figure out what to seal them with. After the sanding the BB Ply looks really nice. I was thinking either a straight shellac or Danish Oil.

                            Comment


                            • #29
                              I need some advice. The vertical and horizontal brace didn't come out as planned. There is about a 0.5" x 0.5" gap. I can just glue and clamp the areas that overlap and ignore that space or I can try and use a wood filler or something else. Thoughts?

                              Comment


                              • #30
                                leave it as is, as long as you have some contact and they are glued and wont rattle

                                Comment

                                Working...
                                X