Tube-Zilla an over-the-top tube sub

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  • ThomasW
    Moderator Emeritus
    • Aug 2000
    • 10934

    Tube-Zilla an over-the-top tube sub

    Having assisted in the design of several dozen tube subs, the time was ripe for one of my own. Now as everyone knows the Klone-Audio/AudioWorx motto is:

    If some's good,
    more's better,
    and too much is just enough..... :B

    Take one 20" dia piece of tube, cut it 33.5" long. Make some 2.5" thick end caps. Use 4" offset spacers for 1.5" top and bottom plates. Cut some holes for a pair of BluePrint 1503's.



    More to come.........




    theAudioWorx
    Klone-Audio

    IB subwoofer FAQ page


    "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson
  • Pat
    Super Senior Member
    • Aug 2000
    • 1637

    #2
    Thomas,
    Looks interesting, can't wait to see the measurements on that bad boy.
    "TubeZilla" that's a great name :B

    How much power are you planning to feed TubeZilla?
    I'll bet he's a hungry beast




    Pat's Page
    Pat's Page

    Comment

    • Andrew Pratt
      Moderator Emeritus
      • Aug 2000
      • 16507

      #3
      dual 1503's! Ouch hope you have a big amp for that sub




      Comment

      • Jack Gilvey
        Senior Member
        • Aug 2001
        • 510

        #4
        Very cool, as usual.

        Comment

        • JonMarsh
          Mad Max Moderator
          • Aug 2000
          • 15261

          #5
          So, Thomas, how much will it weigh, loaded? Will you load the drivers upstairs or downstairs? :E

          Hey Tom, why'd you put the top plate on?

          What will you drive this one with? A channel for each driver? :B


          Regards,

          Juan




          Earth First!
          _______________________________
          We'll screw up the other planets later....
          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-Saƫns 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

          • ThomasW
            Moderator Emeritus
            • Aug 2000
            • 10934

            #6
            Two end caps = quasi equal loading for the drivers.

            Weight should be around 150lbs, given the fact that the 1503's are around 45 lbs each.




            theAudioWorx
            Klone-Audio

            IB subwoofer FAQ page


            "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

            Comment

            • John Holmes
              Moderator Emeritus
              • Aug 2000
              • 2703

              #7
              Very nice indeed.




              "I came here, to chew bubble gum and kickass. And I'm all out of bubble gum!!!" My DVD's
              "I have come here, to chew bubblegum and kickass. And I'm all out of bubblegum!!!"

              Comment

              • AndrewM
                Senior Member
                • Oct 2000
                • 446

                #8
                What kind of performance results are you anticipating with this tube? Any other details you care to share? It looks like a sealed setup, what type of EQ are you going to throw on it? Details, we want details...

                Andrew

                Comment

                • JonMarsh
                  Mad Max Moderator
                  • Aug 2000
                  • 15261

                  #9
                  *ORIGINALLY* this was supposed to be a rough test box for the volume for the MRS Klone.

                  But, I think after Thomas got started on it, he just got carried away with himself, and now he's going to cover the tube, finish the endplates, and in general, make it a "finished" item. Why not, after all?

                  Yes, it's a sealed sub; will need EQ, but not too much; if I remember correctly the Q target was 0.577. He's says he's gonna wimp out on the amplification- try to get by with an Aragon 8008 ST, which will only do about 450 Watts per channel at 4 ohms (each driver driven by one channel).

                  Well, you know, for a bedroom or dining room sub, you don't need as much power...

                  At least, I'm assuming bedroom or dining room, cause the other bigger rooms already have built in subs! :B

                  Of course, I forgot - he could get an AC inverter, and put it in his Explorer. Then he would be jammin in the 'hood, with all his conservative Republican neighbors! :E

                  Well, I'd better leave him to fill in the rest of the details.

                  Bye-

                  Jon




                  Earth First!
                  _______________________________
                  We'll screw up the other planets later....
                  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-Saƫns 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

                  • ThomasW
                    Moderator Emeritus
                    • Aug 2000
                    • 10934

                    #10
                    Andrew

                    Originally I intended to klone the Krell MRS. And was going to make a prototype acoustical model (aka same sized sealed enclosure) using a short piece of tube. A couple of weeks ago I helped a friend make a tube version of the AS-15. When he bought his tube, I had him get a 36" piece for me. As his project evolved I decided to make a more complete tube, larger than the MRS, but still be sealed with 2-1503's.

                    The LspCAD model for 2-1503's in a sealed box for a "Q" of 0.577 is 134L. After trimming my piece of tube the gross volume is 157L. After subtracting for the drivers the volume is still larger than the needed for the Q 0.577 so the final "Q" will even be lower. This is great because I won't need a LT circuit, just some EQ (Behringer) to lift the lowest octaves.

                    Progress has been slowed by the very windy weather we've had the last week. I'm spray painting the wood and refuse to do that in doors. So am waiting for a calm period. Other than that the sub is ready for driver mounting and final assembly




                    theAudioWorx
                    Klone-Audio

                    IB subwoofer FAQ page


                    "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

                    Comment

                    • Anthony Gomez
                      Junior Member
                      • Jan 2002
                      • 1

                      #11
                      Thomas, I do hope you realize that you copied me!

                      I have a mini (relative) version of what you have. I am using an 18" tube with 45L on each of my 1503'. ends are 1" and endcaps are 2". the wood is black laquer (a real pain in the @$$) and the tube currently has grey foam (waiting for its sock).

                      ...when I first saw your's, I thought someone had snuck a picture of my sub while I was building it in september!

                      Comment

                      • ThomasW
                        Moderator Emeritus
                        • Aug 2000
                        • 10934

                        #12
                        Anthony

                        Too funny

                        I was going to make it smaller, but decided that I wanted the lower "Q" without using a LT. I should have it assembled by monday. Can't wait to hear it....




                        theAudioWorx
                        Klone-Audio

                        IB subwoofer FAQ page


                        "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

                        Comment

                        • Julian Data
                          Junior Member
                          • Nov 2000
                          • 12

                          #13
                          Looks great Thomas!




                          Julian Data
                          COO of Blackhole Motorsports
                          http://www.bhmotorsports.com
                          Revamped DIY www site coming soon!
                          Julian Data
                          COO of Blackhole Motorsports
                          http://www.bhmotorsports.com
                          Revamped DIY www site coming soon!

                          Comment

                          • ThomasW
                            Moderator Emeritus
                            • Aug 2000
                            • 10934

                            #14
                            Tube-Zilla has been finished for a while now. Haven't had time to do any serious measurements/listening due to working on 2 different M8a-MKIII projects. But here's a pic for those interested






                            theAudioWorx
                            Klone-Audio

                            IB subwoofer FAQ page


                            "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

                            Comment

                            • JonMarsh
                              Mad Max Moderator
                              • Aug 2000
                              • 15261

                              #15
                              This pic doesn't really do it justice... I had a chance to see it first hand earlier this month during my overnight visit to Chez Waale. - it's definitely sweet. Haven't heard it yet- hopefully I'll have a chance to play wit it when I'm out to Denver in May.

                              I'm still thinking about what to do with my two BPD1203's- I'm still leaning towards a laydown push-push sub, one driver at each end. It's just that they get kind of heavy when you put two Blueprints in one cabinet.... :B

                              -Jon




                              Earth First!
                              _______________________________
                              We'll screw up the other planets later....
                              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-Saƫns 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

                              • Lex
                                Moderator Emeritus
                                • Apr 2001
                                • 27461

                                #16
                                Looks great to me, I bet it kicks butt too.

                                Lex
                                Doug
                                "I'm out there Jerry, and I'm loving every minute of it!" - Kramer

                                Comment

                                • Andrew Pratt
                                  Moderator Emeritus
                                  • Aug 2000
                                  • 16507

                                  #17
                                  Nice looking sub thomas....where's this one going to end up?




                                  Comment

                                  • Pat
                                    Super Senior Member
                                    • Aug 2000
                                    • 1637

                                    #18
                                    Nice work Thomas!
                                    I'll bet it sounds pretty good.




                                    Pat's Page
                                    Pat's Page

                                    Comment

                                    • John Holmes
                                      Moderator Emeritus
                                      • Aug 2000
                                      • 2703

                                      #19
                                      Nice indeed!




                                      "I came here, to chew bubble gum and kickass. And I'm all out of bubble gum!!!" My DVD's
                                      "I have come here, to chew bubblegum and kickass. And I'm all out of bubblegum!!!"

                                      Comment

                                      • ThomasW
                                        Moderator Emeritus
                                        • Aug 2000
                                        • 10934

                                        #20
                                        Thanks guys

                                        Yes it plays quite loud.

                                        I don't have a place to use it. So it will join the isobaric shiva and the AS-15 in storage in the front bedroom. Always good to have a few spare subs in case of emergency :B




                                        theAudioWorx
                                        Klone-Audio

                                        IB subwoofer FAQ page


                                        "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

                                        Comment

                                        • JonMarsh
                                          Mad Max Moderator
                                          • Aug 2000
                                          • 15261

                                          #21
                                          Ah yes, the Casa de Tomas Subwoofer museum! More examples of the art extent than any other private collection....




                                          Earth First!
                                          _______________________________
                                          We'll screw up the other planets later....
                                          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-Saƫns 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

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