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Nubie's Build - The Copper Project

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  • Nubie's Build - The Copper Project

    Long time lurker, first time post.
    First I'd like to thank all the contributors to this forum, what a great place!

    A bit of history:
    Built my first DIY speaker in 2000, the ar.com speakers by Ed Frias. Just screwed everything together from prebuilt parts and enjoyed. Fast forward 10 yrs and family is finally settled and kids are at an age where constant supervision is no longer necessary. Saw the PE flyer with the Copper Project last year and was intrigued by the design. I've always wanted to build my own cabinets and x-overs, so I ordered all the parts in November, 2010. After a couple of emails to Marty who graciously provided invaluable advice and answered my questions, I proceed to buy my last bit of equipment needed for the project which was a router and bits.

    One major nubie mistake I made was thinking my wife's Sienna could transport full sized MDF sheets. I've bought numerous plywood 4x8 sheets before without problems, but the MDF comes in 1" longer dimensions. It barely fit inside, and I dented the tailgate trying to push it in that last 1/2 inch to lock. :(

    Planning out what I wanted to do. (Wanted removable front baffles) Also debating on whether or not try something easier first like the OS by Paul C.











    My removable baffle, will this work from a sonic standpoint?





    Still need to find time to route out the port hole and the roundovers on the baffles.

    Nubie comments.
    1. Circular saws don't always cut at 90 degrees, especially near the end of a long cut.
    2. Live the saying: Measure twice cut once (for me measure 3-4x)
    3. Only experience and practice bring 90 degree cuts and accurate measurements.
    4. Routing holes, routing in general make LOTS of toxic dust! wear a mask!!!
    5. Need to buy a table saw, battery operated circular saw sucks
    6. tape measure always dissapears
    7. people at Staples don't know what a compass is
    8. Wear ear and eye protection at all times (especially when wife comes into garage and complains of dust everywhere)
    9. buy and use all the clamps you can afford.

    All comments, suggestions, criticisms appreciated.

    To be continued.....

    Ted

  • #2
    Re: Nubie's Build - The Copper Project

    Those look really well for your first build from scratch , "and Dent" . Ouch that sucks , bent my truck bed once on a dunking booth.
    I would also round over the back side of the opening for the woofer a bit.

    Really nice work.
    Thanks ,
    JB

    Comment


    • #3
      Re: Nubie's Build - The Copper Project

      Great start! In the future, have the place where you bought the mdf to rip it into more manageable pieces. My local HD will do 5 cuts for free, the local Lowes has never charged me.
      Audiophiles listen to the equipment, not the music.

      Comment


      • #4
        Re: Nubie's Build - The Copper Project

        Looks good so far! In response to your question about the removable baffles- that should be just fine. Although for a good seal, Id use a thin speaker gasket foam between the baffle and enclosure where they meet up.

        Yes, mdf and routers make for an incredibly dusty experience, I learned that while working on my current project.

        Comment


        • #5
          Re: Nubie's Build - The Copper Project

          Man, you get my heart felt sympathy and big-cojones award for trying to cut everything with a circular saw and clamp on guide. (I'm in the same boat - looking at table saws now). Nonetheless, great job and keep the pics coming.

          I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
          "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

          High value, high quality RS150/TB28-537SH bookshelf - TARGAS NLA!
          SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM
          My Voxel min sub Yet-another-Voxel-build

          Tangband W6-sub

          Comment


          • #6
            Re: Nubie's Build - The Copper Project

            Originally posted by Steve Henry View Post
            Great start! In the future, have the place where you bought the mdf to rip it into more manageable pieces. My local HD will do 5 cuts for free, the local Lowes has never charged me.
            My HD cut all the pieces of my mini & center free, (2 sheets). I even tried to give the guy a $ 10 tip, He declined to take it. Be aware tho, they don't cut to exact measurements.

            Comment


            • #7
              Re: Nubie's Build - The Copper Project

              You are building a super-good speaker; sounded real sweet at Iowa, and looks like the build was pretty easy for you, also.

              Cheers / Robert

              Comment


              • #8
                Re: Nubie's Build - The Copper Project

                Thanks for the comments, and yes I'm gonna get HD to cut the sheets down to size a bit next time! Just wished I knew about the slightly bigger sized MDF (compared to 4x8 ply) before trying to shove it into the car.

                This weekend to do
                1. cut port holes
                2. roundoff baffles
                3. chamfer inside baffles
                4. install hurricane nuts and braces
                5. sand, sand, sand
                6. decide where to install binding posts (high or low?)
                7. decide on veneering process
                8. construct x-overs

                Ted

                Comment


                • #9
                  Re: Nubie's Build - The Copper Project

                  i fear someday, when you have a more complete tool set, you will make us all look bad. good job so far. i think you will make marty feel proud.
                  " To me, the soundstage presentation is more about phase and distortion and less about size. However, when you talk about bass extension, there's no replacement for displacement". Tyger23. 4.2015

                  Quote Originally Posted by hongrn. Oct 2014
                  Do you realize that being an American is like winning the biggest jackpot ever??

                  http://www.midwestaudioclub.com/spot...owell-simpson/
                  http://s413.photobucket.com/albums/pp216/arlis/

                  Comment


                  • #10
                    Re: Nubie's Build - The Copper Project

                    Originally posted by tubetrek View Post
                    Nubie comments.
                    1. Circular saws don't always cut at 90 degrees, especially near the end of a long cut.
                    2. Live the saying: Measure twice cut once (for me measure 3-4x)
                    3. Only experience and practice bring 90 degree cuts and accurate measurements.
                    4. Routing holes, routing in general make LOTS of toxic dust! wear a mask!!!
                    5. Need to buy a table saw, battery operated circular saw sucks
                    6. tape measure always dissapears
                    7. people at Staples don't know what a compass is
                    8. Wear ear and eye protection at all times (especially when wife comes into garage and complains of dust everywhere)
                    9. buy and use all the clamps you can afford.Ted
                    +1 on #6. I hate the wandering tape measure. And all the rest are spot on. I would like to add #10-

                    If you only have one of something left, and need it, you will render it useless in some form or fashion.

                    Comment


                    • #11
                      Re: Nubie's Build - The Copper Project

                      Originally posted by arlis_1957@yahoo.com View Post
                      i think you will make marty feel proud.
                      Just what we need....:rolleyes:

                      Ain't that chunk of swiss on his shoulders large enough already?? :D

                      Heh,
                      Wolf
                      "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                      "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                      "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                      "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                      *InDIYana event website*

                      Photobucket pages:
                      http://photobucket.com/Wolf-Speakers_and_more

                      My blog/writeups/thoughts here at PE:
                      http://techtalk.parts-express.com/blog.php?u=4102

                      Comment


                      • #12
                        Re: Nubie's Build - The Copper Project

                        Looking good! Yup, when you fire these up you will be very pleased. Anyone at Iowa DIY 2009 will tell you that Marty did a marvelous job on these, even with that cheese handicap of his. The low end was really amazing from such a small woofer and the voicing was perfect.
                        Co-conspirator in the development of the "CR Gnarly Fidelity Reduction Unit" - Registered Trademark, Patent Pending.

                        Comment


                        • #13
                          Re: Nubie's Build - The Copper Project

                          Aesthetically, I think it would be a good idea to put the port on the back of the enclosure (at the same height off the floor as you would have put it on the front). Or, if you use adjustable-height speaker spikes on the bottom of the enclosure, you could put the port on the bottom and then adjust the speaker's height off the carpet to 'tune' the bass to the room.
                          Best Regards,

                          Rory Buszka

                          Taterworks Audio

                          "The work of the individual still remains the spark which moves mankind ahead, even more than teamwork." - Igor I. Sikorsky

                          If it works, but you don't know why it works, then you haven't done any engineering.

                          Comment


                          • #14
                            Re: Nubie's Build - The Copper Project

                            Managed to get some more done on the speakers.

                            Rounded off the baffle and routed the front port hole.


                            Found out how unforgiving a router is and made a minor mistake.


                            Well make that two mistakes, luckily it was on only one baffle.


                            second baffle came out perfect


                            wood putty to fix routing mistakes.


                            Had to stop to work on kid's school project. For those who have grade school kids, had to work on Flat Stanley Project.

                            Ted

                            Comment


                            • #15
                              Re: Nubie's Build - The Copper Project

                              [
                              Nubie comments.
                              1. Circular saws don't always cut at 90 degrees, especially near the end of a long cut.
                              2. Live the saying: Measure twice cut once (for me measure 3-4x)
                              3. Only experience and practice bring 90 degree cuts and accurate measurements.
                              4. Routing holes, routing in general make LOTS of toxic dust! wear a mask!!!
                              5. Need to buy a table saw, battery operated circular saw sucks
                              6. tape measure always dissapears
                              7. people at Staples don't know what a compass is
                              8. Wear ear and eye protection at all times (especially when wife comes into garage and complains of dust everywhere)
                              9. buy and use all the clamps you can afford.

                              All comments, suggestions, criticisms appreciated.

                              To be continued.....

                              Ted[/QUOTE]

                              Ted, loved the comments. All very true. Had a smile ear to ear. Good looking build too. Rock on. Robert.

                              Comment

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