Tangband W5-2143 Enclosure

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  • Webster
    Junior Member
    • May 2013
    • 3

    Tangband W5-2143 Enclosure

    I apologize in advance for the breathtaking lack of knowledge and understanding I have of the basics regarding speaker enclosure design, and ask for your assistance at the same time.

    I downloaded some free software and plugged the numbers from the speaker spec sheet into the excel spreadsheet of the design software. I have attached the image of the graph for a vented box, which I understand gives better bass response compared to sealed boxes. If I read this graph correctly, does this mean that this full-range speaker will be overdriven and damaged in regular use? I do not understand how to interpret the information in the graph. For general use for music listening, would this design be a bad idea? I think I plugged in all the specs correctly.

    Thanks very much,

    Webster
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  • tcpip
    Member
    • Oct 2005
    • 69

    #2
    No, it won't get damaged in "regular" use. The graph indicates that you can't play loud and low at the same time. This means you can use this driver in, say, a small desktop speaker or standmount, and play at moderate volumes. Don't connect a high power amp to this driver and play hard rock at high volumes, that's all. If you gradually increase the volume, you may hear audible distortion and harshness before you damage the driver.

    If you play things like piano sonatas, then the speaker can play fairly loud without problems.

    I could be wrong, but this is my impression.

    Sent from my moto g(9) using Tapatalk

    Comment

    • chrisn
      Senior Member
      • Sep 2007
      • 166

      #3
      Agreed, it should be fine at moderate levels or with music that doesn't have much bass. 22l is a pretty large box for a 5" driver, not that there's anything wrong with doing that.

      Comment

      • JonMarsh
        Mad Max Moderator
        • Aug 2000
        • 15261

        #4
        Unibox is a good tool- I suggest reducing the input powers, and also checking the peak cone excursion graph for the vented alignment.

        22L is pretty large for a 5" driver, but it has a very low mass cone in order to get the extended top end and relatively high sensitivity of 90dB, which is why it models better in a 22L than the typical 5" driver.

        Check the 2nd plot down for peak excursion. Another alternative to extend the low end a bit is to use an EBS style alignment, tuned slightly below the Fs resonance. This will result in a bit leaner bass tone, but with more extension.

        Don't forget, you'll still need to provide baffle step response correction, even though this is a full range driver- you don't get away with having a BSC EQ network, even though you won't have a crossover per se.
        the AudioWorx
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        Comment

        • tcpip
          Member
          • Oct 2005
          • 69

          #5
          Originally posted by JonMarsh
          ....
          Don't forget, you'll still need to provide baffle step response correction, even though this is a full range driver- you don't get away with having a BSC EQ network, even though you won't have a crossover per se.
          Sorry, didn't understand this. A resistor and and inductor will do the job, I thought?


          Sent from my moto g(9) using Tapatalk

          Comment

          • JonMarsh
            Mad Max Moderator
            • Aug 2000
            • 15261

            #6
            Originally posted by tcpip
            Sorry, didn't understand this. A resistor and and inductor will do the job, I thought?


            Sent from my moto g(9) using Tapatalk
            Look at the impedance curve on the W5-2143. You'll probably want to flatten in a bit with a shunt RC zobel network.
            the AudioWorx
            Natalie P
            M8ta
            Modula Neo DCC
            Modula MT XE
            Modula Xtreme
            Isiris
            Wavecor Ardent

            SMJ
            Minerva Monitor
            Calliope
            Ardent D

            In Development...
            Isiris Mk II updates- in final test stage!
            Obi-Wan
            Saint-Saëns Symphonique/AKA SMJ-40
            Modula PWB
            Calliope CC Supreme
            Natalie P Ultra
            Natalie P Supreme
            Janus BP1 Sub


            Resistance is not futile, it is Volts divided by Amperes...
            Just ask Mr. Ohm....

            Comment

            • tcpip
              Member
              • Oct 2005
              • 69

              #7
              Originally posted by JonMarsh
              Look at the impedance curve on the W5-2143. You'll probably want to flatten in a bit with a shunt RC zobel network.
              Ah, ok, thanks. Never occurred to me. Newbie question: how does it impact the SPL?

              Sent from my moto g(9) using Tapatalk

              Comment

              • JonMarsh
                Mad Max Moderator
                • Aug 2000
                • 15261

                #8
                An easy job if you model the driver in VituixCAD and model the BSC network (parallel combination of inductor and resistor in series with driver) and model the impedance correctly. Otherwise, get an inexpensive impedance measuring kit, like the Dayton DATS from Parts express, and measure it exactly, and export the data to VituixCAD
                the AudioWorx
                Natalie P
                M8ta
                Modula Neo DCC
                Modula MT XE
                Modula Xtreme
                Isiris
                Wavecor Ardent

                SMJ
                Minerva Monitor
                Calliope
                Ardent D

                In Development...
                Isiris Mk II updates- in final test stage!
                Obi-Wan
                Saint-Saëns Symphonique/AKA SMJ-40
                Modula PWB
                Calliope CC Supreme
                Natalie P Ultra
                Natalie P Supreme
                Janus BP1 Sub


                Resistance is not futile, it is Volts divided by Amperes...
                Just ask Mr. Ohm....

                Comment

                • JonMarsh
                  Mad Max Moderator
                  • Aug 2000
                  • 15261

                  #9
                  Originally posted by tcpip
                  Ah, ok, thanks. Never occurred to me. Newbie question: how does it impact the SPL?

                  Sent from my moto g(9) using Tapatalk
                  For a fixed series network, rising impedance means the attenuation will drop with increasing frequency- it won't match the theoretical behavior into an fixed resistive load.

                  Some one could model just the parallel RC network into JUST that driver and get it right, eventually, but amplifiers don't always like rising impedance loads- but that's mostly a problem just for vacuum tube amps or zero feedback solid state amps, like Ayre Acoustics.

                  If you have measurement gear, you can fine tune everything. You probably would want to check the on axis and off axis response and adjust the voicing for a good acoustic target- flat is not what sounds best with a lot of program source, but a controlled slight downslope above 1kHz.
                  the AudioWorx
                  Natalie P
                  M8ta
                  Modula Neo DCC
                  Modula MT XE
                  Modula Xtreme
                  Isiris
                  Wavecor Ardent

                  SMJ
                  Minerva Monitor
                  Calliope
                  Ardent D

                  In Development...
                  Isiris Mk II updates- in final test stage!
                  Obi-Wan
                  Saint-Saëns Symphonique/AKA SMJ-40
                  Modula PWB
                  Calliope CC Supreme
                  Natalie P Ultra
                  Natalie P Supreme
                  Janus BP1 Sub


                  Resistance is not futile, it is Volts divided by Amperes...
                  Just ask Mr. Ohm....

                  Comment

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