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A good tweeter to match 5" SB Acoustics Magnesium Woofers

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  • #16
    Originally posted by xmax View Post
    Just guessing looking at the filter the tweeter would be struggling with the low high-pass frequency and slope made worse by the resistor "pad"
    without a shunt. I would be happy to prove it to you.
    Please prove it. I would be more than happy to build the design you come up with and we can do a side by side blind listening session at the next diy event.
    Last edited by craigk; 12-23-2017, 06:10 AM.
    craigk

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

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    • #17
      Originally posted by xmax View Post
      I would steer clear of the Sopranos design that tweeter can sound so much better with a good crossover design.

      Wow! The phrase "Put your mind into gear before putting your mouth into motion" immediately came to mind.
      "
      "Everything is nothing without a high sound quality." (Sure Electronics)

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      • #18
        I'm with the rest of these guys, and have heard them on more than one occasion by different builders as well as Jeff's. They are fine as they are.

        Later,
        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

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        • #19
          Originally posted by ernperkins View Post


          Wow! The phrase "Put your mind into gear before putting your mouth into motion" immediately came to mind.
          "
          Exactly.
          Guess xmax's age.

          My guess: 15. His grammar is passable. His trolling is good.

          Comment


          • #20
            Originally posted by xmax
            Change the DCR of that or any tweeter 6.2 ohm higher (like what the "pad" resistor is doing) into any xover simulation.
            Or do it in actual reality and look what happens to the transfer function or actual response.
            Then look at the distortion. Then please tell me why you would want to torture any well designed driver.
            What a lol train. Please xmax stop embarrassing yourself, go back to the LCD Cookbook and learn the basics, driver attenuation start around page 175. Distortion is not affected by a series resistor, frequency response is. Not every speaker needs an L-pad to drop the level, sometime the change in frequency response from a single resistor is to the benefit of the transfer function and resulting frequency response. There is nothing secret or hiding in the Sopranos design, the crossover, frequency response, phase, and transfer function are all there for all to see.

            I will await the entertainment of your explanation of how to properly pad a tweeter.
            Don't waste your money on a new set of speakers, you get more mileage from a cheap pair of sneakers. Next phase, new wave, dance craze, anyways it's still rock and roll to me!

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            • #21
              Don't overlook the Wavecor TW022WA06. It's not a small faceplate but quite a nice tweeter.
              No matter where you go, there you are.
              Website

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              • #22
                Originally posted by dcibel View Post

                What a lol train. Please xmax stop embarrassing yourself, go back to the LCD Cookbook and learn the basics, driver attenuation start around page 175. Distortion is not affected by a series resistor, frequency response is. Not every speaker needs an L-pad to drop the level, sometime the change in frequency response from a single resistor is to the benefit of the transfer function and resulting frequency response. There is nothing secret or hiding in the Sopranos design, the crossover, frequency response, phase, and transfer function are all there for all to see.

                I will await the entertainment of your explanation of how to properly pad a tweeter.
                "sometime the change in frequency response from a single resistor is to the benefit of the transfer function and resulting frequency response."

                This is exactly my point, why would anyone want peaking below 2K with a tweeter that already has peaking below 2K and a Fs of 960hz?
                And hence the comment about distortion.

                Don't worry I ordered the tweeters yesterday to prove my point. This forum seems more like a cult instead of a place for people
                to share different approaches and a place to learn.

                I don't think I would even ask the SB29RDNC-C000-4 to deal with that transfer function.
                Guess xmax's age.

                My guess: 15. His grammar is passable. His trolling is good.

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                • #23
                  And as for the original post I recommend the SB29RDNC-C000-4.
                  Guess xmax's age.

                  My guess: 15. His grammar is passable. His trolling is good.

                  Comment


                  • #24
                    Originally posted by xmax View Post

                    "sometime the change in frequency response from a single resistor is to the benefit of the transfer function and resulting frequency response."

                    This is exactly my point, why would anyone want peaking below 2K with a tweeter that already has peaking below 2K and a Fs of 960hz?

                    I don't think I would even ask the SB29RDNC-C000-4 to deal with that transfer function.
                    I would suggest running a baffle diffraction simulation to better understand why.

                    Please do point out the peaking below 2kHz. Here I've provided the on-axis frequency response and transfer function with the area circled for you. Now here I will expect something like "oh I mean 3.5kHz" where you might see a "peak" in the transfer function, or if you look at it another way, you might see an attenuation toward high frequencies that is necessary to obtain the intended system response.

                    As for your last statement, why you would expect any tweeter to "deal" with a crossover that's not specifically designed for it and the baffle it's mounted on is beyond me.
                    Click image for larger version

Name:	2017-12-23 12_07_30-Introducing the Sopranos by Jeff Bagby-1.pdf - Foxit Reader.png
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                    Click image for larger version

Name:	2017-12-23 12_07_52-Introducing the Sopranos by Jeff Bagby-1.pdf - Foxit Reader.png
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                    This last one is the manufacturer data for the SB26STCN, showing all that peaking we're talking about.
                    Click image for larger version

Name:	2017-12-23 12_26_44-SB Acoustics SB26STCN-C000-4 tweeter, 4 ohms.png
Views:	1
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ID:	1357381

                    Don't waste your money on a new set of speakers, you get more mileage from a cheap pair of sneakers. Next phase, new wave, dance craze, anyways it's still rock and roll to me!

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                    • #25
                      The truth as usual shows up in the phase response.
                      Guess xmax's age.

                      My guess: 15. His grammar is passable. His trolling is good.

                      Comment


                      • #26
                        .
                        Click image for larger version

Name:	giphy.gif
Views:	1
Size:	1.77 MB
ID:	1357383
                        Don't waste your money on a new set of speakers, you get more mileage from a cheap pair of sneakers. Next phase, new wave, dance craze, anyways it's still rock and roll to me!

                        Comment


                        • #27
                          Originally posted by dcibel View Post

                          I would suggest running a baffle diffraction simulation to better understand why.

                          Please do point out the peaking below 2kHz. Here I've provided the on-axis frequency response and transfer function with the area circled for you. Now here I will expect something like "oh I mean 3.5kHz" where you might see a "peak" in the transfer function, or if you look at it another way, you might see an attenuation toward high frequencies that is necessary to obtain the intended system response.

                          As for your last statement, why you would expect any tweeter to "deal" with a crossover that's not specifically designed for it and the baffle it's mounted on is beyond me. [ATTACH=CONFIG]n1357378[/ATTACH]
                          [ATTACH=CONFIG]n1357379[/ATTACH]

                          This last one is the manufacturer data for the SB26STCN, showing all that peaking we're talking about.
                          [ATTACH=CONFIG]n1357381[/ATTACH]

                          The tweeter used in this baffle peaking, sorry if that was not clear enough.
                          Guess xmax's age.

                          My guess: 15. His grammar is passable. His trolling is good.

                          Comment


                          • #28
                            Originally posted by xmax View Post


                            The tweeter used in this baffle peaking, sorry if that was not clear enough.
                            Ok great, you've found the on-axis response using this baffle, so please go on to explain how the transfer function applied to that response is incorrect. I also want to hear more about the distortion created by the resistor, and the phase.
                            Don't waste your money on a new set of speakers, you get more mileage from a cheap pair of sneakers. Next phase, new wave, dance craze, anyways it's still rock and roll to me!

                            Comment


                            • #29
                              A graph of something, probably not important.
                              Attached Files
                              Don't waste your money on a new set of speakers, you get more mileage from a cheap pair of sneakers. Next phase, new wave, dance craze, anyways it's still rock and roll to me!

                              Comment


                              • #30
                                Originally posted by dcibel View Post

                                Ok great, you've found the on-axis response using this baffle, so please go on to explain how the transfer function applied to that response is incorrect. I also want to hear more about the distortion created by the resistor, and the phase.

                                No problem, I will have the tweeters Tuesday.
                                Guess xmax's age.

                                My guess: 15. His grammar is passable. His trolling is good.

                                Comment

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