What's Thomas Up to?

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  • JonMarsh
    Mad Max Moderator
    • Aug 2000
    • 15214

    What's Thomas Up to?

    Thomas got out the whips and chains, all the while mumbling about showing me who can build the biggest baffle (not the same as who is the most baffled), and let's face it it, there's is PLENTY of baffle material here to go around...

    Aleene's Marshmallow glue

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    tacky...

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    Last edited by theSven; 06 May 2023, 22:37 Saturday. Reason: Update image location
    the AudioWorx
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  • Txgrizzly
    Senior Member
    • Jun 2009
    • 235

    #2
    oh no.... the beginnings of SUPER SPEAKER... what type of drivers would need something that thick...

    Comment

    • Bill Schneider
      Senior Member
      • Sep 2007
      • 158

      #3
      WOW!

      You guys need to wrangle a sponsorship from Titebond!

      Here's a sticker for the side of the baffle...

      Last edited by theSven; 06 May 2023, 22:40 Saturday. Reason: Remove broken image link
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      http://www.afterness.com/audio

      Comment

      • Paul W
        Senior Member
        • Oct 2004
        • 549

        #4
        Those are gonna be a joy to carry across the room !!!
        Paul

        Comment

        • ThomasW
          Moderator Emeritus
          • Aug 2000
          • 10934

          #5
          Paul, there's more than one baffle there, we just glued them up in a single stack for easier clamping

          It's Aleene's Tacky Glue, the stuff North Creek used to sell as their product...

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          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

          • Paul W
            Senior Member
            • Oct 2004
            • 549

            #6
            ...what a disappointment :W
            Paul

            Comment

            • 1Michael
              Senior Member
              • Sep 2006
              • 291

              #7
              So that's how you real speaker builders laminate baffles…us ghetto style builders pour the glue on and smear it with our hands :cry:
              Michael
              Chesapeake Va.

              Comment

              • Dennis H
                Ultra Senior Member
                • Aug 2002
                • 3791

                #8
                See, now Thomas would get ET's approval -- no puny rebel-scum-sized baffles. Big is good, bigger is better, Deathstar-size is just barely big enough.

                Comment

                • AJINFLA
                  Senior Member
                  • Mar 2005
                  • 680

                  #9
                  Originally posted by Paul W
                  Those are gonna be a joy to carry across the room !!!
                  It's all your fault Paul. 30" waveguides 'fer chrissakes.
                  My guess is dipole baffles for some 21 inch "mid"woofers
                  Last edited by AJINFLA; 21 October 2009, 06:26 Wednesday.
                  Manufacturer

                  Comment

                  • soundemon
                    Senior Member
                    • May 2009
                    • 136

                    #10
                    Originally posted by buggers
                    So that's how you real speaker builders laminate baffles…us ghetto style builders pour the glue on and smear it with our hands :cry:
                    Finger painting rules!
                    DIY - once you start down that (dark) path, forever will it dominate your destiny!

                    Comment

                    • Bent
                      Super Senior Member
                      • Sep 2003
                      • 1570

                      #11
                      I use the neighbor's cat as a wiping rag to spread adhesives. :lol:

                      Comment

                      • CraigJ
                        Senior Member
                        • Feb 2006
                        • 518

                        #12
                        "What's Thomas Up to?" My guess is a remake of the The 'Great' Heil... Did I win?

                        Cj

                        Comment

                        • JonMarsh
                          Mad Max Moderator
                          • Aug 2000
                          • 15214

                          #13
                          Originally posted by CraigJ
                          "What's Thomas Up to?" My guess is a remake of the The 'Great' Heil... Did I win?

                          Cj

                          You got a spy cam installed or somethin'?
                          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

                          • CraigJ
                            Senior Member
                            • Feb 2006
                            • 518

                            #14
                            Originally posted by JonMarsh
                            You got a spy cam installed or somethin'?
                            Yep, and Thomas is a very good dancer. :banana:

                            Cj

                            Comment

                            • ThomasW
                              Moderator Emeritus
                              • Aug 2000
                              • 10934

                              #15
                              Originally posted by CraigJ
                              "What's Thomas Up to?" My guess is a remake of the The 'Great' Heil... Did I win?
                              Give that man a cigar... :T

                              The Great Heil baffles (black Whispers) were assembled using the tacky glue. The baffle is composed of a layer of 3/4" BB ply sandwiched between layers of 3/4" MDF

                              In addition the stack contains baffles for my build of the Vifa 6.5" Nomex line array like Chasw98 is building.

                              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

                              • Dave Bullet
                                Senior Member
                                • Jul 2007
                                • 474

                                #16
                                4x2s might provide less flexing if the other way up

                                Comment

                                • Dennis H
                                  Ultra Senior Member
                                  • Aug 2002
                                  • 3791

                                  #17
                                  Over at DIY, Earl Geddes recommended Titebond Melamine Glue for constrained layer construction. I guess he was involved in that when he was at Ford. It looks kinda like Aleene's Tacky glue -- "specialized vinyl acetate" formula and the viscosity is about 4x the original yellow glue. Cheaper than Aleene's too.

                                  Comment

                                  • ThomasW
                                    Moderator Emeritus
                                    • Aug 2000
                                    • 10934

                                    #18
                                    I can't find Titebond Melamine Glue for less than the $20/gal at Aleene's

                                    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

                                    • Dennis H
                                      Ultra Senior Member
                                      • Aug 2002
                                      • 3791

                                      #19
                                      Ah, I didn't know you could get Aleene's that cheap. I went to the official site and they want $40/gal.

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                                      Comment

                                      • kingpin
                                        Senior Member
                                        • Jun 2006
                                        • 958

                                        #20
                                        Oh man! If those are what I think they are I will need to wear a bib to clean up all my drool. I think the look of those whispers are so sexy. For a speaker I mean.
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                                        Comment

                                        • Brian Kingsbury
                                          Member
                                          • Sep 2009
                                          • 44

                                          #21
                                          You could have just skipped the clamps and just parked a Ford Expedition on top of the stack.
                                          ;x( We're not worthy! ;x(

                                          Comment

                                          • Hank
                                            Super Senior Member
                                            • Jul 2002
                                            • 1345

                                            #22
                                            Yep, that was one of two ingredients in North Creek's cabinet damping compound. The other was sheetrock joint compound. I tried it inside a couple of cabs, but can't say I could tell there was a discernable deadening effect.

                                            And, speaking of the Whispers, here's an excerpt from Legacy Audio's web site:
                                            "Project Whisper

                                            by William R. Dudleston

                                            “My goal with Whisper® was to create the most undistorted mirror of the microphone to date. Whisper was built in prototype stages using electrostatic, ribbon, Heil and and moving coil transducers. The speaker that resulted represents our best efforts and has remained essentially unchanged over the last three years. I have resisted any and all temptations to flavor the design. In short, this speaker is selfishly designed to satisfy a very personal goal.

                                            Being a life-long recording technique fanatic*, I literally wanted Whisper to be able to discern the differences between a Schoeps-Collette, AKG 414 or Neumann U-47 microphone in application.

                                            To test Whisper for coloration in the design phase, I would literally play a solo performance through Whisper and re-record it as a live event using comparable mic technique. This in turn would be played back and re-recorded again. Such a process is brutally revealing of any colorations and room dependencies. I have learned more with PROJECT WHISPER than any other project in which I have been previously involved and feel grateful for the acceptance Whisper has received in recording studios around the world.”

                                            I wonder what Thomas' transducers will be...

                                            Comment

                                            • ThomasW
                                              Moderator Emeritus
                                              • Aug 2000
                                              • 10934

                                              #23
                                              Originally posted by Hank
                                              I wonder what Thomas' transducers will be...
                                              Not really a big secret, the baffles are for the finished version of these.

                                              Last edited by theSven; 06 May 2023, 22:40 Saturday. Reason: Remove broken image link

                                              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

                                              • Txgrizzly
                                                Senior Member
                                                • Jun 2009
                                                • 235

                                                #24
                                                Thomas, has that design been written up somewhere?

                                                Comment

                                                • ThomasW
                                                  Moderator Emeritus
                                                  • Aug 2000
                                                  • 10934

                                                  #25
                                                  DIY (Do it yourself): Cabinetry, speakers, subwoofers, crossovers, measurements. Jon and Thomas have probably designed and built as many speakers as any non-professionals. Who are we kidding? They are pros, they just don't do it for a living. This has got to be one of the most advanced places on the net to talk speaker building, period.
                                                  Last edited by theSven; 06 May 2023, 22:40 Saturday. Reason: Update htguide url

                                                  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

                                                  • CupCak3
                                                    Senior Member
                                                    • Oct 2007
                                                    • 127

                                                    #26
                                                    I don't mean to derail the thread, but why use tacky glue for the lamination over el cheapo grande wood glues? I'm ASSuMEing it makes the lamination stiffer (but I don't don't like to ASSuME). If this is correct, any clue why it's stiffer than the others and will you be using the same glue on the seams?

                                                    Comment

                                                    • ThomasW
                                                      Moderator Emeritus
                                                      • Aug 2000
                                                      • 10934

                                                      #27
                                                      The tacky glue dries flexible not stiff

                                                      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

                                                      • Hank
                                                        Super Senior Member
                                                        • Jul 2002
                                                        • 1345

                                                        #28
                                                        Which is a reason I thought about using PE's vinyl barrier sheet between layers of MDF or sandwiched between MDF and BB. But you said that would result in insufficient panel stiffness. I may give it a test.

                                                        Comment

                                                        • ThomasW
                                                          Moderator Emeritus
                                                          • Aug 2000
                                                          • 10934

                                                          #29
                                                          Those vinyl sheets are designed to damp vibrations in sheet metal or be sandwiched between layers of drywall that are then screwed together...

                                                          I don't trust something with a 'peel-n-stick' adhesive to hold together the laminations used when making a baffle.

                                                          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

                                                          • Hank
                                                            Super Senior Member
                                                            • Jul 2002
                                                            • 1345

                                                            #30
                                                            If it were 3M "peel-n-stick" it would definitely hold - but it's not :cry:
                                                            I would supplement with contact cement - I'd have to use it on the non adhesive side anyway.

                                                            Comment

                                                            • CraigJ
                                                              Senior Member
                                                              • Feb 2006
                                                              • 518

                                                              #31
                                                              So Thomas,

                                                              How are the Big ESS AMT's coming along?

                                                              Craig
                                                              Last edited by CraigJ; 17 January 2010, 00:20 Sunday.

                                                              Comment

                                                              • ThomasW
                                                                Moderator Emeritus
                                                                • Aug 2000
                                                                • 10934

                                                                #32
                                                                A ruptured lumbar dsic has brought speaker building to a halt.

                                                                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

                                                                • CraigJ
                                                                  Senior Member
                                                                  • Feb 2006
                                                                  • 518

                                                                  #33
                                                                  Thomas,

                                                                  So sorry to hear you have a ruptured lumbar disc. Three discectomies, one neck fusion, and a final lower back fusion on my wife's back has made me painfully aware of your pain and discomfort. I hope R&R and PT help; no lifting.

                                                                  Craig

                                                                  Comment

                                                                  • ---k---
                                                                    Ultra Senior Member
                                                                    • Nov 2005
                                                                    • 5202

                                                                    #34
                                                                    Man, that sucks. Hope you're getting better.
                                                                    - Ryan

                                                                    CJD Ochocinco! ND140/BC25SC06 MTM & TM
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                                                                    Comment

                                                                    • Johnloudb
                                                                      Super Senior Member
                                                                      • May 2007
                                                                      • 1877

                                                                      #35
                                                                      Thomas,

                                                                      Real Sorry to hear about that. That's a bummer. I've had minor back problems off and on (back spasms) and such and they were no fun. Just over doing it or stretching wrong caused that in the past.

                                                                      My cousin had a herniated disc once ... took lots of rest to heal.

                                                                      What caused that to happen Thomas? If you don't mind.

                                                                      I guessing lifting something heavy? A dipole speaker? My dad (a nurse) said sometimes he gets really big, strong guys in there with ruptured or herniated discs. They just bent or twisted the wrong way while lifting. Kind of a hard thing to predict.

                                                                      I wish you a fast and complete recovery, though I know these things take time.
                                                                      John unk:

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

                                                                      My Website (hyperacusis, tinnitus, my story)

                                                                      Comment

                                                                      • Face
                                                                        Senior Member
                                                                        • Mar 2007
                                                                        • 995

                                                                        #36
                                                                        I have a few bulging and herniated disks, one of them impinging on a nerve, so I know where you're coming from. Feel better!
                                                                        SEOS 12/AE TD10M Front Stage in Progress

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