Announcement

Collapse
No announcement yet.

Anarchy Exodus 4 + RS100P-8 + SB19

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

  • #16
    Re: Anarchy Exodus 4 + RS100P-8 + SB19

    I got my pair from diysoundgroup.com

    Comment


    • #17
      Re: Anarchy Exodus 4 + RS100P-8 + SB19

      Beautiful work ,jclin4 - quite a bit going into a deceptively simple design/build.
      Thanks for the build log.

      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


      • #18
        Re: Anarchy Exodus 4 + RS100P-8 + SB19

        I'm very reluctant to take these apart now, but the voicing stage is over and it's time to finish the cabs as weather will turn colder. Finishing will be done outdoors and in an unheated garage. I really enjoyed listening to these over the past few weeks.

        Click image for larger version

Name:	DSC_0001_small.jpg
Views:	1
Size:	339.3 KB
ID:	1170072

        Didn't have to do much voicing-wise, but the biggest difference was in the small cap used in parallel with the woofer coil in the tank circuit (there is also a resistor in there to avoid a direct cap path to ground).

        Modeling called for a .4uF cap, but .47uF and .33uF are commonly available. Started out with the larger value and then moved to the smaller one. Although almost no difference in FR, the resulting sound was much cleaner. It brings home the point that FR isn't the whole picture, as well as the importance of paying attention to what drivers are doing outside their pass bands.

        Comment


        • #19
          Re: Anarchy Exodus 4 + RS100P-8 + SB19

          Hopefully we'll hear these at the next NY DIY.
          "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

          http://www.diy-ny.com/

          Comment


          • #20
            Re: Anarchy Exodus 4 + RS100P-8 + SB19

            Yup, that's the plan. And thanks Mike for supplying the RS100P's for this build These make for very nice midranges.

            The Anarchy's are a super-impressive 6.5" woofer. I now understand why you have used these in multiple builds, including the last iron driver comp.

            Comment


            • #21
              Re: Anarchy Exodus 4 + RS100P-8 + SB19

              Very nice! Can you comment on how the midrange sounded compared to how it measured? Particularly, I'm curious about how the open baffle effected perceived midrange levels compared to your nearfield measurements & simulations.

              Comment


              • #22
                Re: Anarchy Exodus 4 + RS100P-8 + SB19

                Originally posted by jclin4 View Post
                Yup, that's the plan. And thanks Mike for supplying the RS100P's for this build These make for very nice midranges.

                The Anarchy's are a super-impressive 6.5" woofer. I now understand why you have used these in multiple builds, including the last iron driver comp.
                You're welcome, I'm looking forward to hearing these.
                "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

                http://www.diy-ny.com/

                Comment


                • #23
                  Re: Anarchy Exodus 4 + RS100P-8 + SB19

                  Originally posted by jim85iroc View Post
                  Very nice! Can you comment on how the midrange sounded compared to how it measured? Particularly, I'm curious about how the open baffle effected perceived midrange levels compared to your nearfield measurements & simulations.
                  I haven't taken full system measurements yet, but when I took the in-cabinet measurements of the RS100P's I was surprised by how flat the response was. I was expecting a large peak and valley in the 1k-2k range that I had seen in my Aengles OB project. Not sure if the flatter response is due to the U frame or 'midrange tunnel' in this build.

                  I also am using polyfill stuffing in the cavity to help control midrange output through the rear. Although I measured with and without stuffing and could see no appreciable difference in FR, it made a difference to my ears.

                  I spent more time playing with stuffing and positioning of the speakers than tweaking the XO during voicing.

                  Comment


                  • #24
                    Re: Anarchy Exodus 4 + RS100P-8 + SB19

                    It was warm yesterday and I started painting the cabs in my garage. Today, was much colder so I was forced to move indoors. Good thing Duratex does not smell!

                    Between the two days, I got down 3 coats with a sanding on the first (priming) coat.

                    Click image for larger version

Name:	Duratex_0001_sm.jpg
Views:	1
Size:	339.0 KB
ID:	1170118

                    I laid down frog tape to cover the Baltic Birch edges; first time using the stuff. Gosh, I sure hope it holds :eek:

                    Comment


                    • #25
                      Re: Anarchy Exodus 4 + RS100P-8 + SB19

                      Back on the topic of the dipole midrange, below is the on-axis measured response of the RS100P-8 in the cabinet. As I said, pretty smooth from 800Hz to 3000Hz. This made crossover work much easier:

                      Click image for larger version

Name:	RS100P-8 in cab.PNG
Views:	1
Size:	28.9 KB
ID:	1170119

                      And here are the off axis measurements, @ 0, 15, 30 and 60 degrees:

                      Click image for larger version

Name:	RS100P-8 in cab with off axis.PNG
Views:	1
Size:	35.6 KB
ID:	1170120

                      Comment


                      • #26
                        Re: Anarchy Exodus 4 + RS100P-8 + SB19

                        Phew! The Frog Tape held! I realized that I had to remove the tape after yesterday's painting, because if the duratex cured fully (after about 5 days), it might be too hard to remove the tape without taking paint away with it.

                        But the tape fully protected the BB edges from the paint, no bleeding, and pulled away easily without the need to score with a razor, leaving nice clean lines.

                        Click image for larger version

Name:	FrogTape_0001_sm.jpg
Views:	1
Size:	299.3 KB
ID:	1170141

                        Now it's on to gel urethane (General Finishes) for the BB. I got good results on other projects with about 8 coats.

                        Comment


                        • #27
                          Re: Anarchy Exodus 4 + RS100P-8 + SB19

                          Finished the finishing recently; project complete! Here are some glam shots:

                          Click image for larger version

Name:	DSC_0003_sm.jpg
Views:	1
Size:	276.6 KB
ID:	1170500Click image for larger version

Name:	DSC_0004_sm.jpg
Views:	1
Size:	380.6 KB
ID:	1170501

                          Click image for larger version

Name:	DSC_0011_sm.jpg
Views:	1
Size:	357.2 KB
ID:	1170502

                          Comment


                          • #28
                            Re: Anarchy Exodus 4 + RS100P-8 + SB19

                            And now measurements. This is on-axis and same distance from wall, as pictured above, i.e. normal listening position but I lifted the speakers a few feet to get them off the floor more for better gating. Measurements are good, 250Hz and above:

                            Click image for larger version

Name:	L inPos on Axis FR.PNG
Views:	1
Size:	20.6 KB
ID:	1170503

                            I was pleased with how these measured (and also how they sound ;)). Now the horizontal off-axis measurements, 0, 15, 30, 60 degrees. But obviously these will measure differently depending on whether you place the microphone toward the center or outer-wards. First the inner followed by outer measurements:

                            Click image for larger version

Name:	R innerXis FR.PNG
Views:	1
Size:	29.7 KB
ID:	1170504 Click image for larger version

Name:	R outerAxis FR.PNG
Views:	1
Size:	28.8 KB
ID:	1170505

                            Comment


                            • #29
                              Re: Anarchy Exodus 4 + RS100P-8 + SB19

                              Finally, since these are open-back, dipole midrange speakers, I wanted to know the effect of having a wall behind, vs taking the measurement in the middle of my room, as I had done with the individual drivers prior to crossover design. Red is middle of the room and Black is in listening position:

                              Click image for larger version

Name:	L inPos vs measPos.PNG
Views:	1
Size:	22.6 KB
ID:	1170506

                              Actually the wall helps...a bit smoother from 300Hz to 1.3kHz. No surprise, these are sensitive to placement, and I had to play around a bit. But that's all part of the fun!

                              Cheers,
                              - John

                              Comment


                              • #30
                                Re: Anarchy Exodus 4 + RS100P-8 + SB19

                                very nice finishing, but of course us Texans are partial to a Burnt Orange hue of any kind!!! Thanks for the measurements, very thorough and I agree that placement could make a big difference in a room with these.
                                Paul

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

                                Comment

                                Working...
                                X