Announcement

Collapse
No announcement yet.

Maurbacs NS6 MTM

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

  • Re: Maurbacs NS6 MTM

    I'd have to run the model for that, but it seems to me that you might as well go with a sealed box.
    I'll model it tonight - even sealed might be too big and have negative effects on the sound.


    Originally posted by rdv View Post
    Hi Don, I was finally able to resume my project and started building the boxes. I was initially going to use your dimensions but decided to maximize the plywood that I bought. i ended up with 9.5W X 16D X 42H (gross). If my calculations are correct I should net about 2.7. Will it be too big? Can I get by without a port? or if I do use the port, it should be even shorter right? your port is already pretty short at 1.5" Sorry not very good doing sims.

    Thanks in advance!

    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: Maurbacs NS6 MTM

      I ran the model in Unibox for 2 NS6 woofers and 2.7 cubic feet volume.
      The only fault I could find was it looked like the step response would "ring" a bit.
      I don't know if that would be even noticeable, much less objectionable.
      If it is, (you'd hear a bit of muddiness in the midrange) just use up some
      volume in the bottom of the tower (styrofoam peanuts in a bag or the inflated
      plastic packing sheets.

      But it should be fine. 3 inch diameter port that's 3 inches long gets you something
      like an EBS alignment. F3 at 55, f6 of 35 Hz. Resist the temptation to crank up the
      amplifier, you will run out of xmax....




      Originally posted by rdv View Post
      Hi Don, I was finally able to resume my project and started building the boxes. I was initially going to use your dimensions but decided to maximize the plywood that I bought. i ended up with 9.5W X 16D X 42H (gross). If my calculations are correct I should net about 2.7. Will it be too big? Can I get by without a port? or if I do use the port, it should be even shorter right? your port is already pretty short at 1.5" Sorry not very good doing sims.

      Thanks in advance!

      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: Maurbacs NS6 MTM

        Thanks for the quick reply! I did find them a bit tall beside my ht speakers so i actually could make them shorter but ill listen to them first. So i could get by with a longer port? I'll try that, I will be powering them with just 25 watts, off a jolida tube amp. I guess It should be ok. I'm anxious to listen to them already but I still need to install the drivers.

        Comment


        • Re: Maurbacs NS6 MTM

          Originally posted by donradick View Post
          Dear friends, another build has been completed. I've had many requests for a MTM version of the Aurbacs, and results have not disappointed. Very simple crossover, great imaging, and lots of dynamics and good bass.







          Port is 3 inch PVC, 3 1/4 inch total length.




          Tower plans for that extra bass "love"

          May I ask what program you use for your 2D drawings? I have 3D covered with Sketchup. Thanks!

          Comment


          • Re: Maurbacs NS6 MTM

            @Limelight -

            Not my work! I forget the guy's name at present.
            Autocad - beautiful drawing.....

            Correction: Autocad guy is Randall Pyter.
            Thanks so much, fella!
            Last edited by donradick; 03-27-2013, 06:38 PM. Reason: added autocad drawing author

            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: Maurbacs NS6 MTM

              I powered mine for almost a year with a little PE Class D 25 watt amp, so you should be good with your tube amp.
              That's some guys idea of heaven - tube amp wth nice paper woofers.


              Originally posted by rdv View Post
              Thanks for the quick reply! I did find them a bit tall beside my ht speakers so i actually could make them shorter but ill listen to them first. So i could get by with a longer port? I'll try that, I will be powering them with just 25 watts, off a jolida tube amp. I guess It should be ok. I'm anxious to listen to them already but I still need to install the drivers.

              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: Maurbacs NS6 MTM

                Thanks Don! I found a free program that looks pretty good http://www.doublecad.com/Products/Do...0/Default.aspx

                Hopefully I can figure it out!

                Comment


                • Re: Maurbacs NS6 MTM

                  Whats wrong with good ole fashioned drafting? I have a few years of drafting. :D

                  Comment


                  • Re: Maurbacs NS6 MTM

                    Originally posted by DarrenM View Post
                    Whats wrong with good ole fashioned drafting? I have a few years of drafting. :D
                    No you have do it in CAD so you can take sharp pencil and a steel rule and draw the cut lines on the wood from the printout of your CAD file.

                    Comment


                    • Re: Maurbacs NS6 MTM

                      Originally posted by donradick View Post
                      Dear friends, another build has been completed. I've had many requests for a MTM version of the Aurbacs, and results have not disappointed. Very simple crossover, great imaging, and lots of dynamics and good bass.



                      Port is 3 inch PVC, 3 1/4 inch total length.
                      Was checking this thread,,and noticed that the xover for the Auras have a coil with a cap in parallel. I'm a total NEWB and trying to learn as much as posible...so what is acomplished by this configuration??

                      Comment


                      • Re: Maurbacs NS6 MTM

                        The third post of this thread shows the measured response of the NS6 in box.
                        There is a pretty big spike at about 4.5Khz. The cap across the coil helps kill that spike.
                        Google "LCR" tank or notch filters". Usually you will find a resistor in parallel also. This particular
                        one works great without a resistor.

                        Originally posted by Kingo View Post
                        Was checking this thread,,and noticed that the xover for the Auras have a coil with a cap in parallel. I'm a total NEWB and trying to learn as much as posible...so what is acomplished by this configuration??

                        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: Maurbacs NS6 MTM

                          Originally posted by donradick View Post
                          The third post of this thread shows the measured response of the NS6 in box.
                          There is a pretty big spike at about 4.5Khz. The cap across the coil helps kill that spike.
                          Google "LCR" tank or notch filters". Usually you will find a resistor in parallel also. This particular
                          one works great without a resistor.
                          Thank you very much,,,I had seen them with the resistor but not the cap. I tried in PCD LITE xover section but that particular NF is not there or I cant find it. Will read some more on the subject..

                          Comment


                          • Re: Maurbacs NS6 MTM

                            Originally posted by Kingo View Post
                            Thank you very much,,,I had seen them with the resistor but not the cap. I tried in PCD LITE xover section but that particular NF is not there or I cant find it. Will read some more on the subject..
                            I think Don is killing two birds with one stone if I'm not mistaken. It's not a typical tank filter because of the size of the inductor, which is also providing the low pass filter for the NS6s.
                            Bryan K.

                            Midwest Audio Club

                            Speedster | | The Wildeman | Sean's NLA Towers | , COUGAR II and | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

                            Comment


                            • Re: Maurbacs NS6 MTM

                              Originally posted by bkeane1259 View Post
                              I think Don is killing two birds with one stone if I'm not mistaken. It's not a typical tank filter because of the size of the inductor, which is also providing the low pass filter for the NS6s.
                              Yep,,thats what confused me. I had seen and read about the NF but they were after the low or high pass...never saw them combined.

                              Comment


                              • Re: Maurbacs NS6 MTM

                                Originally posted by donradick View Post
                                I powered mine for almost a year with a little PE Class D 25 watt amp, so you should be good with your tube amp.
                                That's some guys idea of heaven - tube amp wth nice paper woofers.
                                I know right thats why i cant wait to power them up. I previously used the amp with the OS kit and was happy with the set up too. But i couldnt resist your maurbacs. Thanks!

                                Comment

                                Working...
                                X