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Linehopper: An Esoteric build

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  • #46
    Re: Linehopper: An Esoteric build

    Originally posted by Paul K. View Post
    Just joking with you, Bill, as I'm sure you're being very careful, although if I tried the same thing, I might end up with a big OOPS.
    Paul
    You wouldn't be the only one. Its nice to watch behinds the scene photos of someone skilled.
    Last edited by JasonP; 11-06-2014, 04:39 PM.
    Audio: Media PC -> Sabre ESS 9023 DAC -> Behringer EP2500 -> (insert speakers of the moment)
    Sites: Jupiter Audioworks - Flicker Stream - Proud Member of Midwest Audio Club

    Comment


    • #47
      Re: Linehopper: An Esoteric build

      I would have stopped at the alignment box and be happy with a tiny TM!

      Good progress - this is going to be one stunning looking speaker....

      Comment


      • #48
        Re: Linehopper: An Esoteric build

        Wow...I'm really speechless. This is so cool. Nice shirt too. ;)
        Bryan K.

        Midwest Audio Club

        Speedster | Sub Attachť | The Wildeman | Sean's NLA Towers | CO‹GAR, COUGAR II and CO‹GAR JR | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

        Comment


        • #49
          Re: Linehopper: An Esoteric build

          Nice work Bill, keep it up! This is so cool.
          My Build Thread's
          Carrera's / Finalist TL's / Speedster TMM's / Speedster MTM Center / Overnight Sensation Surrounds

          Comment


          • #50
            Re: Linehopper: An Esoteric build

            Thanks for all the kind comments & words of encouragement. I am
            now up to a stereo pair of linehopper sandwiches. Next week I
            will be gluing two or three of the permanent exterior panels
            into position so that I can remove the temporary alignment boxes.

            Click image for larger version

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            Bill
            SideTowers: http://techtalk.parts-express.com/fo...corundum-build
            Totally Flat: http://techtalk.parts-express.com/fo...5-totally-flat
            Plumber's Delight: http://techtalk.parts-express.com/fo...notech-winners
            Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build

            Comment


            • #51
              Re: Linehopper: An Esoteric build

              Very cool build thread. I'm enjoying seeing a slightly different build process. I'm going to have to remember some of your techniques.
              - Ryan

              CJD Ochocinco ND140/BC25SC06 MTM & TM
              CJD Khanspires - A Dayton RS28/RS150/RS225 WMTMW
              CJD Khancenter - A Dayton RS28/RS150/RS180 WTMW Center
              CJD In-Khan-Neatos - A Dayton RS180/RS150/RS28 In/On Wall MTW

              Comment


              • #52
                Re: Linehopper: An Esoteric build

                Originally posted by 4thtry View Post
                Thanks for all the kind comments & words of encouragement. I am
                now up to a stereo pair of linehopper sandwiches. Next week I
                will be gluing two or three of the permanent exterior panels
                into position so that I can remove the temporary alignment boxes.

                [ATTACH=CONFIG]51498[/ATTACH] [ATTACH=CONFIG]51499[/ATTACH]

                Bill
                Hi Bill

                How are planning to line up the edges of the panel with one another? Do you plan to have the edges angled? This always seems pretty daunting to me. My circular saw has a hard time cutting at 90 deg. I always need to cut then use the flush trim router to make the edges 90degree.

                -Ani

                Comment


                • #53
                  Re: Linehopper: An Esoteric build

                  This is awesome, very much looking forward to seeing how this turns out. Sub'ed!

                  Comment


                  • #54
                    Re: Linehopper: An Esoteric build

                    very nice indeed. hope to hear them some where down the road.
                    craigk

                    " Voicing is often the term used for band aids to cover for initial design/planning errors " - Pallas

                    Comment


                    • #55
                      Re: Linehopper: An Esoteric build

                      Originally posted by 4thtry View Post
                      Thanks for all the kind comments & words of encouragement. I am
                      now up to a stereo pair of linehopper sandwiches. Next week I
                      will be gluing two or three of the permanent exterior panels
                      into position so that I can remove the temporary alignment boxes.

                      [ATTACH=CONFIG]51498[/ATTACH] [ATTACH=CONFIG]51499[/ATTACH]

                      Bill
                      I miss basements...!!! The south is cruel to homeowners...

                      Seriously though, really cool/creative idea! Looking forward to the end result...
                      SEC DIY 2014 Speaker Show is on! *November 8th*
                      Wanna win a set of Newform Research R30 ribbons?!?!
                      SEC DIY 2014 Thread

                      SEC DIY 2012 Speaker Show
                      SEC DIY 2011 Speaker Show

                      Comment


                      • #56
                        Re: Linehopper: An Esoteric build

                        Originally posted by 4thtry View Post
                        Here are the WT3 measured TS parameters for my pair of tweeters,
                        straight out of the box with no break-in. They show an unusual
                        looking curve with twin peaks. Fs measures a little high on both
                        tweeters, but these figures will probably drop a little as the
                        drivers break in:

                        [ATTACH=CONFIG]51374[/ATTACH] [ATTACH=CONFIG]51375[/ATTACH]
                        The woofers might be exceptionally good, however, the significant inconsistency shown in your tweeter impedance measurements is about what I would expect from tweeters costing under $10 each. However, I have even seen two dollar tweeters with far more unit-to-unit consistency than those!



                        Your speakers still look very interesting. And, although the unit-to-unit variation (on at least this early batch) of these tweeters is disappointing, you may still be able to achieve excellent sounding results in the end.

                        Click image for larger version

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                        Last edited by critofur; 11-10-2014, 10:04 PM.
                        "...this is not a subwoofer" - Jeff Bagby ;)

                        Comment


                        • #57
                          Re: Linehopper: An Esoteric build

                          Bill, are these going to fit in your little car?
                          Don't listen to me - I have not sold any $150,000 speakers.

                          Comment


                          • #58
                            Re: Linehopper: An Esoteric build

                            Thanks again for all the positive feedback & words of encouragement.
                            I made a little progress since last week.


                            Since almost all remaining panels are 8.125 inches wide, I ripped
                            a few large panels of 3/4" MDF down to several 8.125 x 48.5"
                            strips on my table saw.

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                            I then took precise measurements of all side profile angles using
                            my miter protractor.


                            The peak at the top of the cabinet appears to be 79 degrees,
                            but my miter protractor tool tells me to cut the two boards
                            that form an overlapping joint at this corner at 11 degrees:

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                            The rear outer corner appears to be 88 degrees, but my miter
                            protractor tells me to cut the two boards that form an
                            overlapping joint at this corner at 2 degrees:

                            Click image for larger version

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                            The rear inside corner appears to be 80 degrees, but my miter
                            protractor tells me to cut the two boards that form an
                            overlapping joint at this corner at 10 degrees:

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                            Last edited by 4thtry; 11-13-2014, 04:06 PM. Reason: Measurement clarification
                            SideTowers: http://techtalk.parts-express.com/fo...corundum-build
                            Totally Flat: http://techtalk.parts-express.com/fo...5-totally-flat
                            Plumber's Delight: http://techtalk.parts-express.com/fo...notech-winners
                            Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build

                            Comment


                            • #59
                              Re: Linehopper: An Esoteric build

                              The front-lower-inside-knee-joint appears to be 67 degrees, but
                              my miter protractor tells me to cut the two boards that form an
                              overlapping joint at this corner at 23 degrees:

                              Click image for larger version

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                              The rear floor junction appears to be 117 degrees, but my miter
                              protractor tells me to cut the one board that meets the base
                              at this joint at 27 degrees:

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                              The terminus angle appears to be 104 degrees, but my miter
                              protractor tells me to cut the one board that meets the base
                              at this joint at 14 degrees:

                              Click image for larger version

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                              The lower baffle junction appears to be 136 degrees, but my
                              miter protractor tells me to cut the two boards that form a
                              miter at this joint at 23 degrees:

                              Click image for larger version

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                              And the upper baffle junction appears to be 140 degrees, but
                              my miter protractor tells me to cut the two boards that form
                              a miter at this joint at 25 degrees:

                              Click image for larger version

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                              Last edited by 4thtry; 11-13-2014, 05:37 PM. Reason: Measurement clarification
                              SideTowers: http://techtalk.parts-express.com/fo...corundum-build
                              Totally Flat: http://techtalk.parts-express.com/fo...5-totally-flat
                              Plumber's Delight: http://techtalk.parts-express.com/fo...notech-winners
                              Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build

                              Comment


                              • #60
                                Re: Linehopper: An Esoteric build

                                I cut the top panels to length at the appropriate bevels using
                                my 12" dual bevel sliding compound miter saw. I then glued
                                these panels to the top of the cabinets:

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                                With these panels securely glued in place, I could remove the top
                                temporary separation box. So I punched the temporary glue blocks
                                out with a hammer. The glue left a few slight scars on the inside
                                of the cabinets, but the boxes slid out easily with no other problems.
                                So, I am happy to report, Paul, that the glue did not seep down behind
                                the boxes and all is well. ;)

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                                SideTowers: http://techtalk.parts-express.com/fo...corundum-build
                                Totally Flat: http://techtalk.parts-express.com/fo...5-totally-flat
                                Plumber's Delight: http://techtalk.parts-express.com/fo...notech-winners
                                Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build

                                Comment

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