Build Thread: The Bombers (SR71's become 3-ways)

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  • exojam
    Midrange Member
    • Sep 2008
    • 349

    #91
    Re: Build Thread: The Bombers (SR71's become 3-ways)

    Originally posted by greywarden
    I need to build a FUS RO DAH!!!

    Is this a Skyrim build?

    James

    Comment

    • greywarden
      Seasoned Veteran
      • Sep 2010
      • 4434

      #92
      Re: Build Thread: The Bombers (SR71's become 3-ways)

      "unrelenting force" might end up as a subwoofer build :D

      रेतुर्न तो थे स्रोत
      return to the source
      leviathan system thread
      deadhorse thread
      shockwave build thread

      instagram :: greywarden_13

      in war, victory . . . in peace, vigilance . . . in death, sacrifice.

      Comment

      • joeybutts
        Seasoned Veteran
        • Oct 2008
        • 4911

        #93
        Re: Build Thread: The Bombers (SR71's become 3-ways)

        Don't know how I missed this build thread Lunch, but this is turning out amazing. I wish I had the cahones to take on a curved cabinet and a fresh design all in one.

        Keep it up and can't wait to see them completed.
        Builds - C-Killa - Speedsters - LithMTM - Talking Sticks - Pocket Rockets - Khanspires - Dayton RS Center - RS225/28A - Kairos - Adelphos - SEOS TD12X - Dayton 8 - Needles - 871S - eD6c - Overnight Sensations - Tritrix (ported) - Lineup F4 - Stentorians - The Cheapies - Tub Thumpers - Barbells - Tuba HT - Numerous subwoofers - probably missing a few...... :p

        Comment

        • lunchmoney
          Seasoned Veteran
          • Jul 2008
          • 4603

          #94
          Re: Build Thread: The Bombers (SR71's become 3-ways)

          Printouts spray-mounted to baffles, pilot hole drilled for jigsaw...




          Jigsaw... so easy to cut through 1/2" plywood...






          Dry fit... happy moment...

          Comment

          • exojam
            Midrange Member
            • Sep 2008
            • 349

            #95
            Re: Build Thread: The Bombers (SR71's become 3-ways)

            Lunch,

            How did you did this "Printouts spray-mounted to baffles"? Thanks.

            James

            Comment

            • lunchmoney
              Seasoned Veteran
              • Jul 2008
              • 4603

              #96
              Re: Build Thread: The Bombers (SR71's become 3-ways)

              Originally posted by exojam
              Lunch,

              How did you did this "Printouts spray-mounted to baffles"? Thanks.

              James
              Printouts done on large format plotter (a giant inkjet printer), spray mount is 3M Super 77 spray adhesive.

              You could do this with 8.5x11 printouts patched together very easily.

              Or just use a damn compass :rolleyes:

              Comment

              • exojam
                Midrange Member
                • Sep 2008
                • 349

                #97
                Re: Build Thread: The Bombers (SR71's become 3-ways)

                Lunch,

                Thank you for the information.

                How many "chances" does the 3M give you before it is stuck to good to move? Thanks.

                James

                Comment

                • lunchmoney
                  Seasoned Veteran
                  • Jul 2008
                  • 4603

                  #98
                  Re: Build Thread: The Bombers (SR71's become 3-ways)

                  Originally posted by exojam
                  Lunch,

                  Thank you for the information.

                  How many "chances" does the 3M give you before it is stuck to good to move? Thanks.

                  James
                  2 chances... as long as you don't push down and smooth it out after the first try

                  Comment

                  • exojam
                    Midrange Member
                    • Sep 2008
                    • 349

                    #99
                    Re: Build Thread: The Bombers (SR71's become 3-ways)

                    Thank you.

                    James

                    Comment

                    • lunchmoney
                      Seasoned Veteran
                      • Jul 2008
                      • 4603

                      Re: Build Thread: The Bombers (SR71's become 3-ways)

                      Big moment... time to glue the baffles to the bracing structure... first a nice generous bead of PL in the dado's of the baffle...




                      Then it was as easy as putting something heavy on the bracing structure to hold it down... this vice probably weighs 80-100 lbs, gotta friend to help lift it... easiest clamp-up ever, if you could call it that... the one clamp you see was just to pull the bracing structure over a hair to get it dead center... if you look closely you can see lines lining up...





                      Comment

                      • lunchmoney
                        Seasoned Veteran
                        • Jul 2008
                        • 4603

                        Re: Build Thread: The Bombers (SR71's become 3-ways)

                        So before someone asks "what's with the little scraps glued around the edges of the braces"...

                        I had a bit of a screw up... when I printed out the shapes for the braces, the printer was set to "scale to print" instead of "100%"...

                        So the braces ended up 3/8" too short in both direction... so 3/16" strips have been added to compensate... not all strips are present yet.

                        A real PITA, but not a big deal... totally irrelevant once it's all glued up.

                        Comment

                        • Mark65
                          Seasoned Veteran
                          • Jul 2007
                          • 4088

                          Re: Build Thread: The Bombers (SR71's become 3-ways)

                          Man, that's good stuff....I've admired your woodcraft since your TriTrix build, and you just keep on raising the bar!:eek:


                          Very very nice.


                          Mark
                          You go your way, I'll go mine. I don't care if we get there on time.

                          ~Pink Floyd

                          Comment

                          • bkeane1259
                            Seasoned Veteran
                            • Mar 2011
                            • 5167

                            Re: Build Thread: The Bombers (SR71's become 3-ways)

                            This is a lot of fun to watch, Lunch. Great job so far. Personally, I'd like to see a youtube video of you doing a knuckle-rap test on the completed cabinet. Imagine she will be dead as a doornail.
                            Bryan K.

                            Midwest Audio Club
                            [SIZE="1"]
                            Speedster | [URL="http://techtalk.parts-express.com/showthread.php?t=229236"]Sub Attach

                            Comment

                            • lunchmoney
                              Seasoned Veteran
                              • Jul 2008
                              • 4603

                              Re: Build Thread: The Bombers (SR71's become 3-ways)

                              Originally posted by Mark65
                              Man, that's good stuff....I've admired your woodcraft since your TriTrix build, and you just keep on raising the bar!:eek:


                              Very very nice.


                              Mark
                              Thanks Mark, it's been quite a journey, and you've been there spurring me along so thanks!

                              This build is really a page out of Bill Fitzmaurices book. He firmly believes that thick heavy materials are not necessary provided the cabinet is well braced, which these certainly will be.

                              What's been really nice is how easy the 1/2" ply is to work with... jigsawig the baffle holes today, for instance, was so simple... probably less than half as much resistance as trying to jigsaw 3/4" mdf...

                              My only concern has been "is a 1/2" thick wall simply soundproof enough" such that sound doesn't simply transmit right through it... But the consensus seems to be that it's a non-issue... I'm certainly not the first to use this thinner material approach, should be ok.

                              What's been really wild is just how different this build has been, as it's literally an inside out build... interesting challenges and opportunities... for instance, gluing the baffle on was incredibly simple: just put a big heavy weight on it. Since the bracing structure is so incredibly stiff, that's all that's needed. It's been fun.

                              Comment

                              • lunchmoney
                                Seasoned Veteran
                                • Jul 2008
                                • 4603

                                Re: Build Thread: The Bombers (SR71's become 3-ways)

                                Wow this build is fun...

                                This thing is so fricking solid and stiff... and LIGHT... that's the shocking thing.



                                Comment

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