Announcement

Collapse
No announcement yet.

Speedster TMM

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Speedster TMM

    Hey guys, I'm going to start this build pretty soon following Paul's design and I've got a few questions.
    1- Do the drivers need to be recessed or can I just surface mount everything?

    2- Is internal bracing necessary? I don't believe Paul makes mention of any bracing so I'm not sure.

    3- I don't really know how to put the crossovers together and was wondering if anyone in the community would assemble them for me for a fee? Or if I could get some good pictures of the completed crossovers along with part #s I need to order or something. I can't make since of the schematics because my knowledge is limited when it comes to electrical components.
    Thanks for any help.

  • #2
    Its pretty simple; I would be willing to talk you through it, you buy the parts and assemble it there. Do you have soldering tools and know how to solder?

    Comment


    • #3
      I can borrow one. I have soldered a little bit so that shouldn't be a problem. Any input on my other questions? Thanks for the help

      Comment


      • #4
        Recess the drivers (at the very least the tweeter), add some braces simple dowels will work.
        There is a company in Grand Rapids that offers the kit with a very nice diagram and even offer the kit with the crossover assembled. There are even rumors of candy...

        Comment


        • #5
          If you don't have the means to recess the drivers, that's ok. The effect would be a slight ripple in the Frequency Response... Not sure if it's audible. Bracing is easy. Just take a few pieces of scrap and wedge them between the walls. Sent from my XT1575 using Tapatalk
          Isn't it about time we started answering rhetorical questions?

          Paul Carmody's DIY Audio Projects
          Twitter: @undefinition1

          Comment


          • #6
            From Paul C's Repository, "The cabinet is constructed with 1/2" MDF, and there is no bracing. Instead of lining the walls, I used a few handfuls of polyfil to lightly fill the box. You can add or remove stuffing to adjust the bass response to your taste. The tweeter is flush-mounted, however the woofer is surface-mounted. As you can see the woofer slightly overlaps the tweeter's flange."

            Paul, would it also be beneficial to glue something, like a scrap piece of wood, to only one of the larger panels of the box, in lieu of a cross brace?

            Good luck with the build, and keep us up to date on the project. We like pictures.
            http://techtalk.parts-express.com/fo...khanspires-but
            http://techtalk.parts-express.com/fo...pico-neo-build
            http://techtalk.parts-express.com/fo...ensation-build

            Comment


            • #7
              Originally posted by Kornbread View Post
              From Paul C's Repository
              I think you are referring to the 2-way bookshelf Speedster. The TMM has braces, AFAIK.

              Comment


              • #8
                Wow! Thanks everyone. Didn't expect to get that many responses so quickly, even from the dang speaker designer himself! It would definitely be easier for me to surface mount everything. I usually don't take the easy way out but I just don't have the tools to make it happen.
                I was looking at the tweeter specs and I seen that that it's only rated for 12w rms. That doesn't seem like much.. Am I going to get decent volume out of these speakers? I am a drummer and love to hear the hi hats and cymbals. I was told a ribbon tweeter is good at bringing out those details, Is this correct? They will be in a 15x18 room but one side is open and leads to my kitchen.

                Comment


                • #9
                  I take that back, it's 15x15 room

                  Comment


                  • #10
                    Originally posted by r0x View Post
                    I think you are referring to the 2-way bookshelf Speedster. The TMM has braces, AFAIK.
                    So much for my reading comprehension.

                    Don't know what tools you have, or budget, but a few basic hand tools can go a long way. If there might be other wood related projects in the future, a cheap router, couple of bits, and a Jasper jig can be had for <$150, and the cost could be spread over several projects.

                    As of yet, I've never heard any speaker that fooled me into believing a real stick was whacking a real drum head/rim right in from of me. Just saying. But I do like the shimmer of a good ribbon. YMMV




                    http://techtalk.parts-express.com/fo...khanspires-but
                    http://techtalk.parts-express.com/fo...pico-neo-build
                    http://techtalk.parts-express.com/fo...ensation-build

                    Comment


                    • #11
                      How much power do I need to run these at full potential? 50w per channel? I know it's probably a dumb question for you guys. I just don't want to go to small and clip out before I get full volume out of them. They should be easy to drive because of their impedance right?

                      Comment


                      • #12
                        You will get plenty of volume out of these with a 50 watt RMS amp. Just note these are lower impedance speakers so a cheap amp not rated for 4 ohm loads may have a problem. As to the 12 watt rating of the tweeter, it's not a problem. The woofer demands far more power, especially when reproducing low frequency content.

                        Comment

                        Working...
                        X