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JADS- NatP HT, or high efficiency on wall/in wall MTM for HT

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  • #16
    Originally posted by kravi4ka View Post
    GGNTKT has some really appealing ideas and WAF is very high, especially for the HT speakers.
    Audioxpress is quite fun sometimes, today I read this, off topic but really makes me want to buy 26 large sheets of Wisa plywood:

    https://audioxpress.com/article/pate...n-loudspeakers

    We are all here because we can’t stop, right?

    Most definitely! Guilty as charged!!

    Now, with PuriFi or the new Hypex modules, we could attempt something that matches the full performance characteristics, but for now I'm in favor of a simpler solution attractive to the budgets of more members- as well as myself!
    the AudioWorx
    Arvo Pärt
    Isiris MLBL
    Modula MT
    Natalie P
    M8ta
    Modula Neo D CC
    Ardent
    Modula MT XE
    Modula Xtreme
    Isiris
    Wavecor Ardent

    SMJ
    Minerva Monitor
    Calliope
    Ardent D

    In Development...
    Isiris Mk II updates
    Calliope CC
    Obi-Wan
    Saint-Saëns Symphonique
    Modula PWB
    Calliope CC Supreme


    Resistance is not futile, it is Volts divided by Amperes...
    Just ask Mr. Ohm....

    Comment


    • #17
      An open box 6RS140 just popped up at PE, so I ordered it, should be here by Monday. I may be on vacation nominally, but I'm still working the issues!

      This will be the primary test article and for first MT prototype.
      the AudioWorx
      Arvo Pärt
      Isiris MLBL
      Modula MT
      Natalie P
      M8ta
      Modula Neo D CC
      Ardent
      Modula MT XE
      Modula Xtreme
      Isiris
      Wavecor Ardent

      SMJ
      Minerva Monitor
      Calliope
      Ardent D

      In Development...
      Isiris Mk II updates
      Calliope CC
      Obi-Wan
      Saint-Saëns Symphonique
      Modula PWB
      Calliope CC Supreme


      Resistance is not futile, it is Volts divided by Amperes...
      Just ask Mr. Ohm....

      Comment


      • #18
        Originally posted by kravi4ka View Post
        GGNTKT has some really appealing ideas and WAF is very high, especially for the HT speakers.
        Audioxpress is quite fun sometimes, today I read this, off topic but really makes me want to buy 26 large sheets of Wisa plywood:

        https://audioxpress.com/article/pate...n-loudspeakers

        We are all here because we can’t stop, right?
        Yes that is how it started out for me, and the adventure continues!
        Painter in training

        Comment


        • #19
          OK, UPS was a bit "late" today, but actually early overall on this delivery which was originally scheduled for Monday! This is the open box sample I was able to order. Looking good, in my opinion, but then I'm always a sucker for cool looking hardware...

          Click image for larger version

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          Once I get the Dual ES180TiA test box assembled, getting a test enclosure for the 6RS140 is high up on my to-do list- mainly I just need to cut a front panel and install ports, the basic box is ready.












          the AudioWorx
          Arvo Pärt
          Isiris MLBL
          Modula MT
          Natalie P
          M8ta
          Modula Neo D CC
          Ardent
          Modula MT XE
          Modula Xtreme
          Isiris
          Wavecor Ardent

          SMJ
          Minerva Monitor
          Calliope
          Ardent D

          In Development...
          Isiris Mk II updates
          Calliope CC
          Obi-Wan
          Saint-Saëns Symphonique
          Modula PWB
          Calliope CC Supreme


          Resistance is not futile, it is Volts divided by Amperes...
          Just ask Mr. Ohm....

          Comment


          • #20
            Slow work takes time... Have successfully purchased 6RS140 from Europe, and today (Saturday, 9-10) loaded up large phenolic sheets to bring out of storage. Also stocked up on more BlieSMa tweeters, and note that Solen's stock situation is improving.

            With the dollar as strong as it is right now, buying from European vendors can make a lot of sense, especially for European built parts. Also looking at some other Faital woofers available in Europe.

            Can build a first test box pretty soon, moving some wood working stuff temporarily to the back patio, for various reasons.
            the AudioWorx
            Arvo Pärt
            Isiris MLBL
            Modula MT
            Natalie P
            M8ta
            Modula Neo D CC
            Ardent
            Modula MT XE
            Modula Xtreme
            Isiris
            Wavecor Ardent

            SMJ
            Minerva Monitor
            Calliope
            Ardent D

            In Development...
            Isiris Mk II updates
            Calliope CC
            Obi-Wan
            Saint-Saëns Symphonique
            Modula PWB
            Calliope CC Supreme


            Resistance is not futile, it is Volts divided by Amperes...
            Just ask Mr. Ohm....

            Comment


            • #21
              Originally posted by kravi4ka View Post
              Flat pack kits is music to my ears…

              I have been very tempted by this one but could not sell the house at the right price to be able to afford the whole set for a HT…
              Today's update addresses the whole cost thing, with some ideas being explored for a level of performance close to what I've proposed for this concept, but at a more pocket book friendly price. This doesn't mean the 6RS140 concept with BliSMa tweeter is being dropped, but more that it will have a little brother or sister.

              One of the things I liked about the 6RS140 was the depth- critical to either version of this application. Well, there have been a lot of distractions the last few months, but then reviewing my driver stock, I had a small "Ah hah!".

              Click image for larger version

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              Remember this "little guy"? The Eighteen Sound 6ND430? One of the first drivers I know of to experiment with an engineered surround to reduce spurious outputs in the midrange?



              Well, gaze on the mechanical details...


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              It's hard to find a driver in this size class this shallow, and it actually beats out the 6RS140 by a few mm. Like the 6RS140, it has a powerful Neo motor, a low inductance design, and high power handling (2 hours pink noise, 200W).

              The cone design is what I now call "classic Pro Audio Paper cone", which PuriFi seems to follow fairly closely for their papers cone drivers, and is visually nearly identical to the 6RS140. The main reason for this is the very stiff behavior and low breakup mode Q.

              Of course, Steve won't like routing a rebate for it anymore than the 6RS140, but for a home constructer, it would be simple to construct a routing guide as I did for the Accuton C79.

              My own measurements show good off axis performance, too. This is mounted in a small, narrow enclosure, not on a flat baffle.


              Click image for larger version

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              OK, this is all well and good, but what about the Tweeter? I love the BlieSMa on paper, but even the T25A-6 can't really be called a budget tweeter...


              I have a possible solution, but there are details to check and logistics to work out.



              Click image for larger version

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              8 pieces of this part by a well known manufacturer are on the way to me, from Europe. The supply is limited, but not small. I hate the new abnormal with all of it's supply chain issues.


              The factory curves look like this:


              Click image for larger version

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              We've had very good results with another related part from this manufacturer, but they have become "unobtanium", apart from the 6 pieces I have on hand. Testing and consistency checks are in order next.


              BTW, PE pushed out delivery dates for the 6RS140 again, until mid October. I have five on hand, three sourced from Europe. I'm looking at the 16 ohm version for the possible on wall/in wall MTM.






              the AudioWorx
              Arvo Pärt
              Isiris MLBL
              Modula MT
              Natalie P
              M8ta
              Modula Neo D CC
              Ardent
              Modula MT XE
              Modula Xtreme
              Isiris
              Wavecor Ardent

              SMJ
              Minerva Monitor
              Calliope
              Ardent D

              In Development...
              Isiris Mk II updates
              Calliope CC
              Obi-Wan
              Saint-Saëns Symphonique
              Modula PWB
              Calliope CC Supreme


              Resistance is not futile, it is Volts divided by Amperes...
              Just ask Mr. Ohm....

              Comment


              • #22
                Ah, but unlike the drawing for the 6RS140​, this one provides a diameter for the curves .... makes life so much easier! 😊
                Hold on to your butts - It's about to get Musical!



                WEBSITE: http://www.smjaudio.com/

                Comment


                • #23
                  An interesting concept, of course I would be most curious to see how the step response appears for what at first examination appears to be a multi-resonant system.

                  But, practical or not, no reason not to indulge yourself.

                  I find that given the projects in the queue, I have a surprising accumulation of wood and synthetic panel products in this remote location... some arriving just a few days ago to support new requirements from the Chancellor!
                  DFAL
                  Dark Force Acoustic Labs

                  A wholly owned subsidiary of Palpatine Heavy Industries

                  Comment

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