Jensen 1071 Build

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  • Steve Manning
    Moderator
    • Dec 2006
    • 1879

    Jensen 1071 Build

    Well the bug hit again ....... time for another speaker build. Since I had done a couple of 2-way builds already I wanted to try a 3-way design this time. After much looking around I decided to go with Troels Gravesen's Jensen 1071 . I was following some new designs here with interest that were not yet finalized (Mr. Marsh) but due his work commitments, very inconsiderate of them to not give him time off!, and my impatience, I went with the 1071.

    In the past I've typically finished a project before posting pictures, but decided to go ahead and post as I go this time. I've tweaked the look over what Troels did with his build. I have kept baffle dimensions, driver placement, and cabinet volumes all the same. I found Sketchup rather helpful when it came to keeping track of volumes and in particular all of the needed angles when it came to cutting material.

    So I started collecting parts, working on the cabinet design with Sketchup and picked up some wood and started making some saw dust this past summer and here is some of what I've been up to .....

    The cabinet design ......

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    Another .....

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    The important parts .....

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    Out of the box ....

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    To be continued ....... Steve
    Last edited by theSven; 15 May 2023, 21:58 Monday. Reason: Update image location
    Hold on to your butts - It's about to get Musical!



    WEBSITE: http://www.smjaudio.com/
  • Steve Manning
    Moderator
    • Dec 2006
    • 1879

    #2
    More Pics

    Setting up some shade for the 100+ degree weather we had over the summer .....

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    SOME of the wood getting ready to be cut with some layout lines ......

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    Keeping the lines straight ........

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    More later .....
    Last edited by theSven; 15 May 2023, 21:59 Monday. Reason: Update image location
    Hold on to your butts - It's about to get Musical!



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

    Comment


    • theSven
      theSven commented
      Editing a comment
      Early garage photos before SMJ Audio was started...
  • meb46
    Senior Member
    • Jul 2010
    • 398

    #3
    Great stuff Steve, keep us posted on all your progress!

    Comment

    • oneplustwo
      Senior Member
      • Jan 2010
      • 666

      #4
      *Drool* Will this be the build to end all builds?
      Zaph SR-71
      Zaph ZDT 3.5
      Sunflower Redux
      12" Dayton HF sub
      CJD RS 150 MT
      Revelator bookshelf
      2x12 Guitar cab
      Corner loaded line array

      Comment

      • dar47
        Senior Member
        • Nov 2008
        • 873

        #5
        Interesting, did you consider the Jenzen Illuminator with it's transmission line base cab and time alined mid 2 order design?

        I too was looking at these designs while I'm waiting for Jon to finish up the Ardents or maybe a 10" Death Star,(I'm just going to be patient). From reviews it's hard to get a sense of how good his xover work is and I think He needs to put out some matching centers for all those tower designs he cranks out.

        Anyways looks like a fun project and I look forward to your progress. :T

        Comment

        • JonMarsh
          Mad Max Moderator
          • Aug 2000
          • 15261

          #6
          Looking good! :T

          Cool Steve- looks like you've got a great project on your hands!

          Keep the pictures coming and let us know how it's going for you! I really like the 26W's - VERY clean woofers!
          the AudioWorx
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          Resistance is not futile, it is Volts divided by Amperes...
          Just ask Mr. Ohm....

          Comment

          • Steve Manning
            Moderator
            • Dec 2006
            • 1879

            #7
            Originally posted by dar47
            Interesting, did you consider the Jenzen Illuminator with it's transmission line base cab and time alined mid 2 order design?

            I too was looking at these designs while I'm waiting for Jon to finish up the Ardents or maybe a 10" Death Star,(I'm just going to be patient). From reviews it's hard to get a sense of how good his xover work is and I think He needs to put out some matching centers for all those tower designs he cranks out.

            Anyways looks like a fun project and I look forward to your progress. :T
            ​


            Hi dar47,

            When I decided to pull the trigger on the 1071's (back in March) Troels had not come out with the Jenzen Illuminator yet, so it was not a factor. I had already started collecting parts when it was released. There is also the part of not being able to change the cabinets at all with the Jenzen line. Part of the fun for me at least is being able to put some of myself into the build. I am not at the point where I can design the entire project, so that leaves the cabinet, keeping in mind the important dimensions that the designer has called out. I did this with Jon Marsh's Modula MTM1's that I built a while back. I'm not sure what, if anything, my cabinet design changed, I don't have Jon's build to compare them with. I will say that I've been very happy with them and they have impressed anyone that has heard them .... Thanks again Jon.

            By the way I was pining after the Ardents as well ..... you win in the patience department.

            As for the xovers ..... I will have to wait and see. Troels seems to have a loyal following (for what that may be worth) and the builders of the 1071 all seem to be very happy with the results ... time will tell.

            Steve
            Last edited by theSven; 15 May 2023, 22:00 Monday. Reason: Update quote and htguide url
            Hold on to your butts - It's about to get Musical!



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

            Comment

            • Steve Manning
              Moderator
              • Dec 2006
              • 1879

              #8
              Some more pics

              Finally had to build a cross cut sled for my table saw, seemed like the best way to deal with all of the different angles I had to cut. That of course was after having to build a new top for my Craftsman saw that had not miter slots for the sled .....

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              Setting the blade with a digital bevel gauge made things fairly straight forward with pretty good results ....

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              Getting things lined up for some biscuit joints ......

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              As a matter of fact there are 154 biscuit slots per cabinet !!!! I think a CNC router would be much easier .....

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              Last edited by theSven; 15 May 2023, 22:02 Monday. Reason: Update image location
              Hold on to your butts - It's about to get Musical!



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

              Comment


              • theSven
                theSven commented
                Editing a comment
                Fast forward some years later and you finally got that CNC Steve Manning :-)
            • JonMarsh
              Mad Max Moderator
              • Aug 2000
              • 15261

              #9
              I don't know which is more impressive- that there are 154 biscuit slots per cabinet, or that you've counted them! :W
              the AudioWorx
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              Resistance is not futile, it is Volts divided by Amperes...
              Just ask Mr. Ohm....

              Comment

              • Face
                Senior Member
                • Mar 2007
                • 995

                #10
                Wait, you're supposed to use more than one or two biscuits per panel? 8O

                Nice job so far! :T
                SEOS 12/AE TD10M Front Stage in Progress

                Comment

                • Steve Manning
                  Moderator
                  • Dec 2006
                  • 1879

                  #11
                  Originally posted by JonMarsh
                  I don't know which is more impressive- that there are 154 biscuit slots per cabinet, or that you've counted them! :W
                  ​


                  Jon I had no idea the count was that high until I ran out of biscuits from the first container that I bought and had to run back up to Lowes and get another one. Since there's a hundred per container I was a little surprised and did the count. Keeps the parts nice and lined up though .......
                  Last edited by theSven; 15 May 2023, 22:03 Monday. Reason: Update quote
                  Hold on to your butts - It's about to get Musical!



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

                  Comment

                  • JonMarsh
                    Mad Max Moderator
                    • Aug 2000
                    • 15261

                    #12
                    Originally posted by Steve Manning
                    ​
                    Jon I had no idea the count was that high until I ran out of biscuits from the first container that I bought and had to run back up to Lowes and get another one. Since there's a hundred per container I was a little surprised and did the count. Keeps the parts nice and lined up though .......
                    ​
                    That it does, that it VERY much does. I'd be using more biscuits on this current build, but that the angles of the top module limit the possibility. The bass modules will be different- more right angles, and more biscuits!

                    Also, I see you cheat, too, with one of my favorite roll out tables! (upper left corner)

                    Last edited by theSven; 15 May 2023, 22:04 Monday. Reason: Update image location
                    the AudioWorx
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                    In Development...
                    Isiris Mk II updates- in final test stage!
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                    Resistance is not futile, it is Volts divided by Amperes...
                    Just ask Mr. Ohm....

                    Comment

                    • Steve Manning
                      Moderator
                      • Dec 2006
                      • 1879

                      #13
                      Originally posted by JonMarsh
                      ​
                      That it does, that it VERY much does. I'd be using more biscuits on this current build, but that the angles of the top module limit the possibility. The bass modules will be different- more right angles, and more biscuits!

                      Also, I see you cheat, too, with one of my favorite roll out tables! (upper left corner)

                      ​


                      Of course I cheat ... all's fair in love and war and all that . Besides it saves on the back and keeps those pesky boards where you want them rather than binding and bouncing off your face at warp 9 speeds. Did that many years ago, thought I'd been kicked by a mule !!!
                      Last edited by theSven; 15 May 2023, 22:05 Monday. Reason: Update image location
                      Hold on to your butts - It's about to get Musical!



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

                      Comment

                      • cjd
                        Ultra Senior Member
                        • Dec 2004
                        • 5568

                        #14
                        If using the right tool for the job is cheating...

                        Did you use any inspiration for the new top, or just wing it? I've been trying to determine the best road to working with larger panels safely, and that's one option - however, it limits my ability to use the fence I have, so I'm curious. Haven't even looked to see what's out there.
                        diVine Sound - my DIY speaker designs at diVine Audio

                        Comment

                        • Steve Manning
                          Moderator
                          • Dec 2006
                          • 1879

                          #15
                          Originally posted by cjd
                          If using the right tool for the job is cheating...

                          Did you use any inspiration for the new top, or just wing it? I've been trying to determine the best road to working with larger panels safely, and that's one option - however, it limits my ability to use the fence I have, so I'm curious. Haven't even looked to see what's out there.
                          ​


                          cjd,

                          I saw something over at BT3 Central where they are a big fan of my particular saw. Someone had done something very similar and I tweaked it a little for what I needed. I also saw the aftermarket riving knife setup which I purchased. It was the first I had found for my saw. The top gives me a lot more working areas and I can use the fence on both sides of the blade. I also added a better switch for easier access. It's not a Martin but it does a pretty good job over all.

                          Steve


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                          Last edited by theSven; 15 May 2023, 22:06 Monday. Reason: Update image location
                          Hold on to your butts - It's about to get Musical!



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

                          Comment

                          • JonMarsh
                            Mad Max Moderator
                            • Aug 2000
                            • 15261

                            #16
                            I love what you've done with your Ryobi! If I do any projects next year, I'll have to go look on the BT3 forum and check that out- it's been a while since I've been over there. And your miter jig is the cat's meow- I've been looking at one of those, but it just hasn't been urgent (yet).
                            the AudioWorx
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                            M8ta
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                            Modula MT XE
                            Modula Xtreme
                            Isiris
                            Wavecor Ardent

                            SMJ
                            Minerva Monitor
                            Calliope
                            Ardent D

                            In Development...
                            Isiris Mk II updates- in final test stage!
                            Obi-Wan
                            Saint-Saëns Symphonique/AKA SMJ-40
                            Modula PWB
                            Calliope CC Supreme
                            Natalie P Ultra
                            Natalie P Supreme
                            Janus BP1 Sub


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

                            Comment

                            • Steve Manning
                              Moderator
                              • Dec 2006
                              • 1879

                              #17
                              Originally posted by JonMarsh
                              I love what you've done with your Ryobi! If I do any projects next year, I'll have to go look on the BT3 forum and check that out- it's been a while since I've been over there. And your miter jig is the cat's meow- I've been looking at one of those, but it just hasn't been urgent (yet).

                              Thanks Jon ...... The miter jig was a birthday gift from my wife, I was tired of messing with the one that came with the saw trying to get an accurate cut. Once you square this one to the blade the rest is a breeze.
                              Last edited by theSven; 15 May 2023, 22:06 Monday. Reason: Update quote
                              Hold on to your butts - It's about to get Musical!



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

                              Comment

                              • Steve Manning
                                Moderator
                                • Dec 2006
                                • 1879

                                #18
                                More pics

                                Getting the sides and internal braces in place .......

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                                Cutting the braces to final configuration .......

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                                Last edited by theSven; 15 May 2023, 22:07 Monday. Reason: Update image location
                                Hold on to your butts - It's about to get Musical!



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

                                Comment

                                • JonMarsh
                                  Mad Max Moderator
                                  • Aug 2000
                                  • 15261

                                  #19
                                  Now this is what a build thread should look like.... I'd better take notes!
                                  the AudioWorx
                                  Natalie P
                                  M8ta
                                  Modula Neo DCC
                                  Modula MT XE
                                  Modula Xtreme
                                  Isiris
                                  Wavecor Ardent

                                  SMJ
                                  Minerva Monitor
                                  Calliope
                                  Ardent D

                                  In Development...
                                  Isiris Mk II updates- in final test stage!
                                  Obi-Wan
                                  Saint-Saëns Symphonique/AKA SMJ-40
                                  Modula PWB
                                  Calliope CC Supreme
                                  Natalie P Ultra
                                  Natalie P Supreme
                                  Janus BP1 Sub


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

                                  Comment

                                  • Steve Manning
                                    Moderator
                                    • Dec 2006
                                    • 1879

                                    #20
                                    Look Ma no glue ....

                                    Here are a few pictures of a dry fit of most of the panels and internal braces ....

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                                    Here's where all those biscuits came in handy .... it let me put the cabinet together and move it around (within reason) without a drop of glue or clamps.

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                                    Last edited by theSven; 15 May 2023, 22:08 Monday. Reason: Update image location
                                    Hold on to your butts - It's about to get Musical!



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

                                    Comment

                                    • Hdale85
                                      Moderator Emeritus
                                      • Jan 2006
                                      • 16075

                                      #21
                                      You move fast.

                                      Comment

                                      • Johnloudb
                                        Super Senior Member
                                        • May 2007
                                        • 1877

                                        #22
                                        You know, it looks like you actually know what you're doing! I don't know how you get everything to fit so nicely. Amazing work!!! ;x(

                                        John
                                        John unk:

                                        "Why can't we all just, get along?" ~ Jack Nicholson (Mars Attacks)

                                        My Website (hyperacusis, tinnitus, my story)

                                        Comment

                                        • cjd
                                          Ultra Senior Member
                                          • Dec 2004
                                          • 5568

                                          #23
                                          Originally posted by Hdale85
                                          You move fast.
                                          Probably took pictures all summer and saved them up to make it LOOK like the rest of us are slackers.
                                          diVine Sound - my DIY speaker designs at diVine Audio

                                          Comment

                                          • JonMarsh
                                            Mad Max Moderator
                                            • Aug 2000
                                            • 15261

                                            #24
                                            Originally posted by cjd
                                            Probably took pictures all summer and saved them up to make it LOOK like the rest of us are slackers.

                                            Boy, I hope that's true, or I'm going to quit DIY due to incompetence! :W
                                            the AudioWorx
                                            Natalie P
                                            M8ta
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                                            Modula MT XE
                                            Modula Xtreme
                                            Isiris
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                                            SMJ
                                            Minerva Monitor
                                            Calliope
                                            Ardent D

                                            In Development...
                                            Isiris Mk II updates- in final test stage!
                                            Obi-Wan
                                            Saint-Saëns Symphonique/AKA SMJ-40
                                            Modula PWB
                                            Calliope CC Supreme
                                            Natalie P Ultra
                                            Natalie P Supreme
                                            Janus BP1 Sub


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

                                            Comment

                                            • JonMarsh
                                              Mad Max Moderator
                                              • Aug 2000
                                              • 15261

                                              #25
                                              Originally posted by Johnloudb
                                              You know, it looks like you actually know what you're doing! I don't know how you get everything to fit so nicely. Amazing work!!! ;x(

                                              John
                                              I think it's called "talent", or, maybe "skill".

                                              Some of us (yours truly included) have to make do with dogged persistence. :W
                                              the AudioWorx
                                              Natalie P
                                              M8ta
                                              Modula Neo DCC
                                              Modula MT XE
                                              Modula Xtreme
                                              Isiris
                                              Wavecor Ardent

                                              SMJ
                                              Minerva Monitor
                                              Calliope
                                              Ardent D

                                              In Development...
                                              Isiris Mk II updates- in final test stage!
                                              Obi-Wan
                                              Saint-Saëns Symphonique/AKA SMJ-40
                                              Modula PWB
                                              Calliope CC Supreme
                                              Natalie P Ultra
                                              Natalie P Supreme
                                              Janus BP1 Sub


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

                                              Comment

                                              • Steve Manning
                                                Moderator
                                                • Dec 2006
                                                • 1879

                                                #26
                                                Thanks for the kind words guys ...... cjd has it figured out though and as Jon also pointed out I cheat. I started the actual building back in July. I figured I'd get things rolling along before posting so I would have something to actually show. I think I spend more time planning then I do building, as a result I don't move along too fast. I'm sure the neighbors think I'm nuts just standing there staring at the wood working out the next step in my head.

                                                John as for for the fit up ..... trust me there is still going to be some bondo to fill in cracks and uneven areas. Though I have found with the last few things I have built, not just speakers, drawing it up in Sketchup first has really helped with the quality of the build. It lets me visualize things and make adjustments without having to waste a pile of wood in the process. As a matter of fact I don't think I would have even been able to build these cabinets without using it. Take a look at this picture and look at all the crazy angles and you'll see what I mean.

                                                Steve


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                                                Last edited by theSven; 15 May 2023, 22:09 Monday. Reason: Update image location
                                                Hold on to your butts - It's about to get Musical!



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

                                                Comment

                                                • JonMarsh
                                                  Mad Max Moderator
                                                  • Aug 2000
                                                  • 15261

                                                  #27
                                                  Originally posted by Steve Manning
                                                  Thanks for the kind words guys ...... cjd has it figured out though and as Jon also pointed out I cheat. I started the actual building back in July. I figured I'd get things rolling along before posting so I would have something to actually show. I think I spend more time planning then I do building, as a result I don't move along too fast. I'm sure the neighbors think I'm nuts just standing there staring at the wood working out the next step in my head.

                                                  John as for for the fit up ..... trust me there is still going to be some bondo to fill in cracks and uneven areas. Though I have found with the last few things I have built, not just speakers, drawing it up in Sketchup first has really helped with the quality of the build. It lets me visualize things and make adjustments without having to waste a pile of wood in the process. As a matter of fact I don't think I would have even been able to build these cabinets without using it. Take a look at this picture and look at all the crazy angles and you'll see what I mean.

                                                  Steve


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                                                  ​


                                                  Yeah, it's one of those things that looks like it was designed either by a drunken sailor or Leonardo DiVinci- more likely the latter.

                                                  I feel the same way about planning, which is why though I had a fair amount in hand back in December when I ordered my 6 piecers of LBL ply, there's been a lot of Shark FX work since then, and rolling changes as I get inspiration or see things differently.
                                                  Last edited by theSven; 16 May 2023, 11:44 Tuesday. Reason: Remove broken image link
                                                  the AudioWorx
                                                  Natalie P
                                                  M8ta
                                                  Modula Neo DCC
                                                  Modula MT XE
                                                  Modula Xtreme
                                                  Isiris
                                                  Wavecor Ardent

                                                  SMJ
                                                  Minerva Monitor
                                                  Calliope
                                                  Ardent D

                                                  In Development...
                                                  Isiris Mk II updates- in final test stage!
                                                  Obi-Wan
                                                  Saint-Saëns Symphonique/AKA SMJ-40
                                                  Modula PWB
                                                  Calliope CC Supreme
                                                  Natalie P Ultra
                                                  Natalie P Supreme
                                                  Janus BP1 Sub


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

                                                  Comment

                                                  • Steve Manning
                                                    Moderator
                                                    • Dec 2006
                                                    • 1879

                                                    #28
                                                    Originally posted by JonMarsh
                                                    ​


                                                    Yeah, it's one of those things that looks like it was designed either by a drunken sailor or Leonardo DiVinci- more likely the latter.

                                                    I feel the same way about planning, which is why though I had a fair amount in hand back in December when I ordered my 6 piecers of LBL ply, there's been a lot of Shark FX work since then, and rolling changes as I get inspiration or see things differently.
                                                    ​

                                                    I have not heard of Shark FX is that a Mac specific package? It looks like it is a little more serious than Sketchup.

                                                    One of these days I'm going to have to try some LBL ply. I mostly use Baltic Birch and mdf for my builds. I've looked around, but the closest I could find any LBL was 2 hours away in Richmond.
                                                    Last edited by theSven; 16 May 2023, 11:44 Tuesday. Reason: Update quote
                                                    Hold on to your butts - It's about to get Musical!



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

                                                    Comment

                                                    • sdl2112
                                                      Senior Member
                                                      • Mar 2006
                                                      • 571

                                                      #29
                                                      Originally posted by Steve Manning
                                                      Thanks for the kind words guys ...... cjd has it figured out though and as Jon also pointed out I cheat. I started the actual building back in July. I figured I'd get things rolling along before posting so I would have something to actually show. I think I spend more time planning then I do building, as a result I don't move along too fast. I'm sure the neighbors think I'm nuts just standing there staring at the wood working out the next step in my head.

                                                      John as for for the fit up ..... trust me there is still going to be some bondo to fill in cracks and uneven areas. Though I have found with the last few things I have built, not just speakers, drawing it up in Sketchup first has really helped with the quality of the build. It lets me visualize things and make adjustments without having to waste a pile of wood in the process. As a matter of fact I don't think I would have even been able to build these cabinets without using it. Take a look at this picture and look at all the crazy angles and you'll see what I mean.

                                                      Steve


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                                                      ​

                                                      I like it...very nice work you are doing. I'm relating to your build because I'm also working on a Troels project...one of the Jenzen Seas designs. I've been working on it on and off since May. It's my first build so I was also accumulating pics before I start a build thread. I've had the same thoughts about my neighbors...I ponder my next moves quite a bit :W Good luck with the project!

                                                      Scott
                                                      Last edited by theSven; 15 May 2023, 22:10 Monday. Reason: Update quote

                                                      Comment

                                                      • Steve Manning
                                                        Moderator
                                                        • Dec 2006
                                                        • 1879

                                                        #30
                                                        Originally posted by sdl2112
                                                        I like it...very nice work you are doing. I'm relating to your build because I'm also working on a Troels project...one of the Jenzen Seas designs. I've been working on it on and off since May. It's my first build so I was also accumulating pics before I start a build thread. I've had the same thoughts about my neighbors...I ponder my next moves quite a bit :W Good luck with the project!

                                                        Scott

                                                        Hi Scott,

                                                        Thanks for the kind words ...... Which one of the Jenzen's are you doing? When do we get to see some pictures?
                                                        Hold on to your butts - It's about to get Musical!



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

                                                        Comment

                                                        • sdl2112
                                                          Senior Member
                                                          • Mar 2006
                                                          • 571

                                                          #31
                                                          Originally posted by Steve Manning
                                                          Hi Scott,

                                                          Thanks for the kind words ...... Which one of the Jenzen's are you doing? When do we get to see some pictures?
                                                          I'm doing the Jenzen NEXT T25 with the CA26RFX woofer in a ported cabinet. I'll detail it with pics when I start my thread (hopefully soon). These started out to just refurbish a pair of RTR 300d speakers with new baffles for my brother but that didn't sound like fun so it turned into a complete rebuild...it's been quite fun. A couple teaser pics of the drivers and a sketch of the speaker.

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                                                          Comment

                                                          • JonMarsh
                                                            Mad Max Moderator
                                                            • Aug 2000
                                                            • 15261

                                                            #32
                                                            Shark FX is both PC and Mac, but I run the Mac version. It has a high degree of interoperability, due to being able to work with file format from other programs (AutoCAD, Sketchup, Catia, etc) and standard exchange formats like STEPS. I was a long time AutoCAD user in the old days. Shark and ViaCAD are descended from a CAD program (Concepts CSI) that developed the automatic cursor alignment techniques used and licensed by several other CAD programs. ViaCAD provides most of the same design functionality, but not the complex rendering capability of Shark FX.

                                                            It's probably overkill, realistically, for speaker design, but I like the software a lot. Model to sheet functionality is quite useful, with a decent printer.

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                                                            Last edited by theSven; 16 May 2023, 11:45 Tuesday. Reason: Update image location
                                                            the AudioWorx
                                                            Natalie P
                                                            M8ta
                                                            Modula Neo DCC
                                                            Modula MT XE
                                                            Modula Xtreme
                                                            Isiris
                                                            Wavecor Ardent

                                                            SMJ
                                                            Minerva Monitor
                                                            Calliope
                                                            Ardent D

                                                            In Development...
                                                            Isiris Mk II updates- in final test stage!
                                                            Obi-Wan
                                                            Saint-Saëns Symphonique/AKA SMJ-40
                                                            Modula PWB
                                                            Calliope CC Supreme
                                                            Natalie P Ultra
                                                            Natalie P Supreme
                                                            Janus BP1 Sub


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

                                                            Comment

                                                            • Steve Manning
                                                              Moderator
                                                              • Dec 2006
                                                              • 1879

                                                              #33
                                                              Originally posted by sdl2112

                                                              I'm doing the Jenzen NEXT T25 with the CA26RFX woofer in a ported cabinet. I'll detail it with pics when I start my thread (hopefully soon). These started out to just refurbish a pair of RTR 300d speakers with new baffles for my brother but that didn't sound like fun so it turned into a complete rebuild...it's been quite fun. A couple teaser pics of the drivers and a sketch of the speaker.

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                                                              ​

                                                              Cool Scott, I'm looking forward to your thread.
                                                              Last edited by theSven; 16 May 2023, 11:19 Tuesday. Reason: Update quote
                                                              Hold on to your butts - It's about to get Musical!



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

                                                              Comment

                                                              • Steve Manning
                                                                Moderator
                                                                • Dec 2006
                                                                • 1879

                                                                #34
                                                                Originally posted by JonMarsh
                                                                Shark FX is both PC and Mac, but I run the Mac version. It has a high degree of interoperability, due to being able to work with file format from other programs (AutoCAD, Sketchup, Catia, etc) and standard exchange formats like STEPS. I was a long time AutoCAD user in the old days. Shark and ViaCAD are descended from a CAD program (Concepts CSI) that developed the automatic cursor alignment techniques used and licensed by several other CAD programs. ViaCAD provides most of the same design functionality, but not the complex rendering capability of Shark FX.

                                                                It's probably overkill, realistically, for speaker design, but I like the software a lot. Model to sheet functionality is quite useful, with a decent printer.

                                                                Click image for larger version  Name:	InventorImport.jpg Views:	0 Size:	264.8 KB ID:	936745
                                                                ​


                                                                Thanks Jon, I'm familiar with AutoCAD and Concepts from work, though have not used them. I'm definitely a CAD neophyte but have enjoyed using Sketchup. I would like to put together a CNC router at some point, that may force me to get a little more serious in the CAD world.
                                                                Last edited by theSven; 16 May 2023, 11:46 Tuesday. Reason: Update quote
                                                                Hold on to your butts - It's about to get Musical!



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

                                                                Comment

                                                                • AdelaaR
                                                                  Senior Member
                                                                  • Dec 2010
                                                                  • 480

                                                                  #35
                                                                  Wow man ... amazing work so far.
                                                                  Mmm ... biscuits

                                                                  Comment

                                                                  • sdl2112
                                                                    Senior Member
                                                                    • Mar 2006
                                                                    • 571

                                                                    #36
                                                                    Originally posted by Steve Manning
                                                                    Cool Scott, I'm looking forward to your thread.
                                                                    Steve, thanks for the inspiration...I started my build thread

                                                                    Comment

                                                                    • Steve Manning
                                                                      Moderator
                                                                      • Dec 2006
                                                                      • 1879

                                                                      #37
                                                                      Originally posted by sdl2112
                                                                      Steve, thanks for the inspiration...I started my build thread

                                                                      On my way over to look .......
                                                                      Hold on to your butts - It's about to get Musical!



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

                                                                      Comment

                                                                      • Steve Manning
                                                                        Moderator
                                                                        • Dec 2006
                                                                        • 1879

                                                                        #38
                                                                        Pics

                                                                        Checking out port tube fit .......

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                                                                        Cabinet starts getting some glue .......

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                                                                        Last edited by theSven; 15 May 2023, 22:11 Monday. Reason: Update image location
                                                                        Hold on to your butts - It's about to get Musical!



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

                                                                        Comment

                                                                        • Steve Manning
                                                                          Moderator
                                                                          • Dec 2006
                                                                          • 1879

                                                                          #39
                                                                          Cabinet Dampening

                                                                          Troels design called for using bitumen and felt on the cabinet walls for dampening. After discovering that the type of felt he uses is tough to find in the US, and not wanting to deal with the smell of the bitumen, I decided to give an idea of Tony Gee's over at Humble Homemade Hifi a try .... carpet tile.

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                                                                          It took a while to get everything cut and glued into place but it has made a big difference with the knuckle test on the walls.
                                                                          Last edited by theSven; 15 May 2023, 22:12 Monday. Reason: Update image location
                                                                          Hold on to your butts - It's about to get Musical!



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

                                                                          Comment

                                                                          • sdl2112
                                                                            Senior Member
                                                                            • Mar 2006
                                                                            • 571

                                                                            #40
                                                                            Great job with the carpet tile... :T What did you use for the adhesive?

                                                                            Comment

                                                                            • Steve Manning
                                                                              Moderator
                                                                              • Dec 2006
                                                                              • 1879

                                                                              #41
                                                                              Originally posted by sdl2112
                                                                              Great job with the carpet tile... :T What did you use for the adhesive?
                                                                              Thanks ...... I used Loctite Pro Line Premium Construction Adhesive and threw some staples in to hold things in place will that set up. Seems to be holding pretty well so far.
                                                                              Hold on to your butts - It's about to get Musical!



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

                                                                              Comment

                                                                              • gbegland
                                                                                Senior Member
                                                                                • Apr 2005
                                                                                • 233

                                                                                #42
                                                                                Make sure to use some 2"+ rigid fiberglass or Bonded Logic inside the cabs behind the mid and woofer. Looking excellent so far. Thanks for all the build porn!

                                                                                Greg

                                                                                Comment

                                                                                • Steve Manning
                                                                                  Moderator
                                                                                  • Dec 2006
                                                                                  • 1879

                                                                                  #43
                                                                                  Originally posted by gbegland
                                                                                  Make sure to use some 2"+ rigid fiberglass or Bonded Logic inside the cabs behind the mid and woofer. Looking excellent so far. Thanks for all the build porn!

                                                                                  Greg
                                                                                  Thanks Greg. I was thinking about using some extra wool stuffing from Madisound that I have for the mid. cabinet and picking up a 5 lb bag of Acousta-Stuf from Parts Express for the bass cabinet.

                                                                                  Steve
                                                                                  Hold on to your butts - It's about to get Musical!



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

                                                                                  Comment

                                                                                  • Steve Manning
                                                                                    Moderator
                                                                                    • Dec 2006
                                                                                    • 1879

                                                                                    #44
                                                                                    Gluing on the final side .....

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                                                                                    Trying out the new sanding block for a little clean up .....

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                                                                                    Last edited by theSven; 15 May 2023, 22:12 Monday. Reason: Update image location
                                                                                    Hold on to your butts - It's about to get Musical!



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

                                                                                    Comment

                                                                                    • Steve Manning
                                                                                      Moderator
                                                                                      • Dec 2006
                                                                                      • 1879

                                                                                      #45
                                                                                      After getting the second side on I was not satisfied with how the back sounded during a knuckle test, even with the carpet tiles added. The bracing worked very well on the sides but was not doing as good a job on the back. So I decided to add an additional layer of 1/2" mdf to the back area. This seemed to balance things out well, even though these things are starting to get a bit heavy!

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                                                                                      One cabinet with and without the extra layer.

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                                                                                      Last edited by theSven; 15 May 2023, 22:13 Monday. Reason: Update image location
                                                                                      Hold on to your butts - It's about to get Musical!



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

                                                                                      Comment

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