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Challenger - 8" silver flute / SB waveguide

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  • Challenger - 8" silver flute / SB waveguide

    With all the recent talk about waveguides, I figure I'll post this one up. It's a high sensitive home theatre speaker. Runs about $200 each including all materials.

    Sounds good and goes real loud. Takes an absolute beating. Designed to be used with a sub. It uses an SB tweeter, Dayton 8" waveguide, and Silver Flute 8" woofer.



    It's fairly large. Here it is under a 50" tv, about 2' in front of it.



    I am jumping the gun a bit because I haven't totally measured it. I wanted to get off axis measurements, but ran into mic problems.

    EDIT - CHANGED THE DESIGN

    Some design comprimises were CTC spacing, with the lower woofer running up to the xo point and NOT shaded at all. Also, the cabinet is sealed to save space, so the bass extention is very bad, as it is meant for HT use and is meant to XO to a sub.

    I'll bump this thread sometime in the future when I can get better measurements of vertical and horizontal response outside. Also, once I finish it in flat black I'll add the photos.

    Thanks for looking.
    Last edited by ryanbouma; 05-02-2012, 06:24 PM.
    https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

  • #2
    Re: Challenger - 8" silver flute / SB waveguide

    Changed
    Last edited by ryanbouma; 05-02-2012, 06:25 PM.
    https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

    Comment


    • #3
      Re: Challenger - 8" silver flute / SB waveguide

      i'll be doing a similar build when i settle on a wg. tm mltl tower. seems the ctc is huge. thoughts?
      " 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


      • #4
        Re: Challenger - 8" silver flute / SB waveguide

        I like this, but do wonder if it would be better as an MTM. I'm not sure if the tweeter can handle it, but an even lower x-over point would help too.
        https://www.facebook.com/Mosaic-Audi...7373763888294/

        Comment


        • #5
          Re: Challenger - 8" silver flute / SB waveguide

          Originally posted by [email protected] View Post
          i'll be doing a similar build when i settle on a wg. tm mltl tower. seems the ctc is huge. thoughts?
          It's a great idea. I even simmed a couple MT options for surround use later on.

          If anyone is interested I can post the sims and xo.
          https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

          Comment


          • #6
            Re: Challenger - 8" silver flute / SB waveguide

            Originally posted by isaeagle4031 View Post
            I like this, but do wonder if it would be better as an MTM. I'm not sure if the tweeter can handle it, but an even lower x-over point would help too.
            I thought about doing that a number of times. Would be easy too, all 3 cut outs are identical. But I wanted these to be low height. So tweeter on top. Also, I originally intended on a 2.5way, but that didn't fly.

            A lower lower xo was problematic in getting an integrated response. I may go active with my minidsp down the road, which could be lower xo.
            https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

            Comment


            • #7
              Re: Challenger - 8" silver flute / SB waveguide

              Here's some completed pictures.

              I've been tinkering with the cross over like crazy. Keep coming back to my original. I keep switching a 1ohm resistor in front and after the tweeter circuit. In front is muffled. After is sibilant. None is perfect. Go figure.







              The flash really shows now dusty my work area is! This was a fun build.

              I'll post a complete set of measurements later. Hopefully in a few weeks or less.
              Last edited by ryanbouma; 05-02-2012, 06:35 PM.
              https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

              Comment


              • #8
                Re: Challenger - 8" silver flute / SB waveguide

                Did u try a half ohm resistor before and after, splitting the value? Maybe a shunt resistor instead? I don't know why, but the cabinets look huge. I like the finish.

                Comment


                • #9
                  Re: Challenger - 8" silver flute / SB waveguide

                  Those turned out great! very "home theatery".
                  Don't listen to me - I have not sold any $150,000 speakers.

                  Comment


                  • #10
                    Re: Challenger - 8" silver flute / SB waveguide

                    Thanks guys.

                    I probably will try a 1/2ohm. I figured I'd play with 1ohm and see. I also played with the tweeter shunt coil. The low pass seems to play nice. Not that the HP does anything wrong. Just my first real attemp at a waveguide. Wanna try all possibilities.
                    https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

                    Comment


                    • #11
                      Re: Challenger - 8" silver flute / SB waveguide

                      Been listening to this active now. My wife immediately preferred it. Almost to quickly judged the active setup I'm still on the fence. The biggest difference is the 1db wide 1.0 q boost in the baffle step region. This is clearly audible to me. I think in my smaller room the sound power from the nearly flat baffle loss is slightly over whelming.

                      Anyways. This is what I'm listening to. Still not measured to confirm the model.

                      https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

                      Comment


                      • #12
                        Re: Challenger - 8" silver flute / SB waveguide

                        Oh ya:

                        LP
                        LR24db/oct @ 1400hz
                        Delay = 0.04ms
                        Offset = 0db
                        PEQ
                        300hz +1db Q=1.0 (Q and magnitude could be adjusted. I think I'll try this)
                        600hz -2.5db Q=1.5
                        1350hz -2.0 Q=2.0

                        HP
                        LR12db/0ct @ 3200hz
                        Delay = 0
                        Offset = 0db
                        PEQ
                        5000hz -1.5db Q=1.5
                        8000hz +2.0db Q=1.5
                        https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

                        Comment


                        • #13
                          Re: Challenger - 8" silver flute / SB waveguide

                          that is the flatest fr i have ever seen. can't wait to see your measurments.
                          nice job Ryan.
                          " 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


                          • #14
                            Re: Challenger - 8" silver flute / SB waveguide

                            Originally posted by [email protected] View Post
                            that is the flatest fr i have ever seen.
                            Thanks! But once you look here it won't be: http://www.musicanddesign.com/NaO_NoteDetails.html

                            I can't really be proud of the flat FR. Anyone can do that with a minidsp. Active doesn't seem very popular on these boards for some reason. Arlis, you really should consider getting one for your 3-way build. It'll cost less. Do the MT with passive and the WM with active. Hard to compete with the ease of design. Only drawback is the extra wires and amps.
                            https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

                            Comment


                            • #15
                              Re: Challenger - 8" silver flute / SB waveguide

                              Originally posted by chrisn View Post
                              Did u try a half ohm resistor before and after, splitting the value? Maybe a shunt resistor instead? I don't know why, but the cabinets look huge. I like the finish.
                              I tried playing with a .5R. Works good in front. I think it'll become permanent on the passive version.

                              Yesterday I was looking at them more from a WAF factor. They seemed small to me :eek: They are big compared to your average MT, but for three 8" holes, it's as small as you can get. Smaller than most any 3 way.
                              https://www.youtube.com/channel/UCm2...oSKdB448TTVEnQ

                              Comment

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