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Hi-vi TN28 tweeter?

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  • Hi-vi TN28 tweeter?


    Has anyone used/heard this little top-mount tweeter and can comment on its sound quality?

    I am looking for something with a very small face profile and very wide off-axis dispersion, to be bracket-mounted above an upward-firing mid (or between 2 mids, up and down firing like in Dan Neubecker's designs) for an omnidirectional speaker project. Crossover will be fairly high--around 5kHz, because the Foster mids go flat that high at 90 degrees off axis.

    This looks on paper to be a likely candidate--but only if it SOUNDS clear, detailed, and non-fatiguing. Curious what others think of it.

  • #2
    Re: Hi-vi TN28 tweeter?

    Provided Link: zaph's tweeter mishmash


    > This looks on paper to be a likely
    > candidate--but only if it SOUNDS clear,
    > detailed, and non-fatiguing. Curious what
    > others think of it.

    Zaph's review of that tweeter was far from shining (see link). Looks like you would have to cross them high. They were used on a project showcase project and that user was happy with them.


    (Originally posted by: dubbreak)

    Comment


    • #3
      Nice sound.


      I crossed them at 3KHz in a small MT, and did not think they sounded bad, at all.

      Regards,
      Eric

      > Zaph's review of that tweeter was far from
      > shining (see link). Looks like you would
      > have to cross them high. They were used on a
      > project showcase project and that user was
      > happy with them.

      Comment


      • #4
        So they should be OK above 5kHz?


        What order (electrical) did you cross them at 3k? And would you describe their sound as more toward the "euphonic" or "analytical" side?

        I rarely listen at "stupid loud" levels--I like mostly classical chamber music and various instrumental "folk" styles (flamenco, Celtic, bluegrass, East European, Hawaiian, etc.), in the lower to mid 80s dB range. Are they stable and comfortable at such levels?

        > I crossed them at 3KHz in a small MT, and
        > did not think they sounded bad, at all.

        > Regards,
        > Eric

        Comment


        • #5
          Re: So they should be OK above 5kHz?


          That's a nice little unit for small MT's

          I believe they will very easily cross at 5KHz.

          I crossed mine lower, using a simple, 1st order network in the tweeter circuit: a 6.8 uF poly with series and shunt padding, in a small MT triad.- a stereo pair and center channel.

          I found they sounded very smooth and airy.- Especially for such a low cost unit. No harsh or abrasive sound. Very typical of many higher priced soft domes. HiVi research makes a lot of nice budget tweeters. The K-1 would amaze you for it's modest price of about $8.

          > What order (electrical) did you cross them
          > at 3k? And would you describe their sound as
          > more toward the "euphonic" or
          > "analytical" side?

          > I rarely listen at "stupid loud"
          > levels--I like mostly classical chamber
          > music and various instrumental
          > "folk" styles (flamenco, Celtic,
          > bluegrass, East European, Hawaiian, etc.),
          > in the lower to mid 80s dB range. Are they
          > stable and comfortable at such levels?

          Comment


          • #6
            I meant MTM


            (The triad I built for HT) The midbass drivers were MCM Kevlar cone shielded 5.25" drivers.

            > That's a nice little unit for small MT's

            > I believe they will very easily cross at
            > 5KHz.

            > I crossed mine lower, using a simple, 1st
            > order network in the tweeter circuit: a 6.8
            > uF poly with series and shunt padding, in a
            > small MT triad.- a stereo pair and center
            > channel.

            > I found they sounded very smooth and airy.-
            > Especially for such a low cost unit. No
            > harsh or abrasive sound. Very typical of
            > many higher priced soft domes. HiVi research
            > makes a lot of nice budget tweeters. The K-1
            > would amaze you for it's modest price of
            > about $8.

            Comment


            • #7
              or 4000 Hz?


              I could be mistaken, and may have crossed at 4KHz, which on a 1st order would have been a 4.7 uF. Not sure, exactly, but from my recollection it was in the neighborhood between 3-4 Khz. 5000 Hz is definitely possible.

              Eric

              > (The triad I built for HT) The midbass
              > drivers were MCM Kevlar cone shielded
              > 5.25" drivers.

              Comment

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