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MiniByzy (Mini Byzantium) Build Thread

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  • #61
    Re: MiniByzy (Mini Byzantium) Build Thread

    Woofer has arrived, and what a beauty. Now Ed can cut perfect custom holes for this beast.
    You will like those woofers. Very revealing midrange, along with solid bass output. I've got them in a 2way with the SS D260483300. Very happy with them.

    Chris

    Edit: I am using the NE180, I just read that you wanted to go with an 8". Even so, you will not be disappointed.
    Chris

    Goofing around since 2000.

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    • #62
      Re: MiniByzy (Mini Byzantium) Build Thread

      Originally posted by czag View Post
      You will like those woofers. Very revealing midrange, along with solid bass output. I've got them in a 2way with the SS D260483300. Very happy with them.

      Chris

      Edit: I am using the NE180, I just read that you wanted to go with an 8". Even so, you will not be disappointed.
      Yeah, we've got high hopes for the midrange performance of the NE225W. The impedance curve is really smooth, and the inductance extremely low. It has the makings for pretty low IM distortion.
      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.

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      • #63
        Re: MiniByzy (Mini Byzantium) Build Thread

        Yeah, we've got high hopes for the midrange performance of the NE225W. The impedance curve is really smooth, and the inductance extremely low. It has the makings for pretty low IM distortion.
        That's it, we can't buy every 8" out there to try. But it was the Le of .16 that I think is the best indicator that it will have exceptional midrange performance. Plenty of 8's have good bass, not very many are transparent through the vocal range.

        Just noticed PE has it on Special for $85 now too!
        Vapor Audio

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        • #64
          Re: MiniByzy (Mini Byzantium) Build Thread

          Ed is quite fond of West Systems Epoxy . . .

          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.

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          • #65
            Re: MiniByzy (Mini Byzantium) Build Thread

            constraining layer applied.

            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


            • #66
              Re: MiniByzy (Mini Byzantium) Build Thread

              Epoxy exterior gets a rub with sandpaper to prep the surface for veneer.

              Check out the edges in this shot from the back quarter . . . :eek:

              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


              • #67
                Re: MiniByzy (Mini Byzantium) Build Thread

                I am not sure if your damping sheet can be considered CLD unless aluminum backer foil is a constrain layer.
                Here's an interesting article. http://www.earsc.com/pdfs/engineering/CLD.pdf
                Do you have an access to Praxis with ACH? Would be interesting to look at vibration transfer with and without viscous layer.
                http://www.diy-ny.com/

                Comment


                • #68
                  Re: MiniByzy (Mini Byzantium) Build Thread

                  Those cabinets should dead and solid. I've used the Dynamat that looks similar to that and it works really well with lowering panel vibration. And I'm glad some else is veneering those because that doesn't look like fun.
                  Did you ever listen to the Vifa NE 8 inch? And if so what were your thoughts of the midrange?
                  Thanks ,
                  JB

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                  • #69
                    Re: MiniByzy (Mini Byzantium) Build Thread

                    Originally posted by r-carpenter View Post
                    I am not sure if your damping sheet can be considered CLD unless aluminum backer foil is a constrain layer.
                    Here's an interesting article. http://www.earsc.com/pdfs/engineering/CLD.pdf
                    Do you have an access to Praxis with ACH? Would be interesting to look at vibration transfer with and without viscous layer.
                    That's only step one. He's covering that material with another layer of material, and then there will be stuffing between the woofer and the walls. These cabinets should be dead, dead, dead. And with the way the woofer is mounted, vibrations are further reduced. There will be no mounting hardware touching the woofer frame. Only gaskets sandwiching it between the 1" baffle sections.

                    Originally posted by DjDisturbed View Post
                    Those cabinets should dead and solid. I've used the Dynamat that looks similar to that and it works really well with lowering panel vibration. And I'm glad some else is veneering those because that doesn't look like fun.
                    Did you ever listen to the Vifa NE 8 inch? And if so what were your thoughts of the midrange?
                    Nope, haven't had a chance to hear the woofers yet. Hopefully, Ed will be sending the finished cabinets, within a week or so, and then the testing and voicing, with various tweeters, begins. I have high hopes for the quality of mids based on the construction and measured parameters.

                    Veneering these should be relatively simple actually. All the curved surfaces only bend in one direction, so application of veneer shouldn't be that bad. Trimming around the curves shouldn't be any tougher than cutting a straight panel edge.

                    I can't wait to see what the baffle looks like . . . :D
                    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


                    • #70
                      Re: MiniByzy (Mini Byzantium) Build Thread

                      3" Precision ports installed. Should tune the enclosure to approximatly 37Hz.

                      The feet Ed will be adding will give plenty of room for the port to breathe.

                      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


                      • #71
                        Re: MiniByzy (Mini Byzantium) Build Thread

                        3" Precision ports installed. Should tune the enclosure to approximatly 37Hz.

                        The feet Ed will be adding will give plenty of room for the port to breathe.

                        They're looking very sweet looks like you and Ed have a very nice build coming together.

                        Take it easy
                        Jay
                        "I like Brewski's threads, they always end up being hybrid beer/speaker threads based on the name of his newest creation." - Greywarden

                        Breakfast Stout - HiVi RT2 II/Aurasound NS6
                        Imperial Russian Stout - Vifa DX25/Fountek FW146/(2) Fountek FW168s - Built by Fastbike
                        Ruination 2.5 way - Vifa DX25/Fountek FW168
                        Levitation TM
                        - Vifa BC25SG15/Fountek FW168

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                        • #72
                          Re: MiniByzy (Mini Byzantium) Build Thread

                          Subscribing... WOW!!!

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                          • #73
                            Re: MiniByzy (Mini Byzantium) Build Thread

                            Aren't the tops of those ports way too close to the enclosure ;)
                            Craig

                            I drive way too fast to worry about cholesterol.

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                            • #74
                              Re: MiniByzy (Mini Byzantium) Build Thread

                              Originally posted by PWR RYD View Post
                              Aren't the tops of those ports way too close to the enclosure ;)
                              That's the full length of the tube. We'll be trimming a few inches off that more than likely. 10" is all we need to tune the volume to 37Hz. I think that tube is something like 13".
                              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


                              • #75
                                Re: MiniByzy (Mini Byzantium) Build Thread

                                Should have used "mini" passive radiators instead :D
                                Craig

                                I drive way too fast to worry about cholesterol.

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