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Recommendations for Original Advent Replacement Woofers Please

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  • Recommendations for Original Advent Replacement Woofers Please

    Does anyone have experience with a drop-in modern woofer for the original Advents.

  • #2
    You have to match up the T/S specs just as you would with any woofer. You may have to use a ten to get the Sd close.
    dia - 12"
    Sd 50 sq in.
    Mmd - 27.1
    Cms - .002409
    Vas - 296.55 l
    Fs - 18.9
    Re - 4.48
    Le - .10
    Bl - 6.05
    Qts - .413
    Xmax - 2.9
    www.billfitzmaurice.com
    www.billfitzmaurice.info/forum

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    • #3
      Originally posted by billfitzmaurice View Post
      You have to match up the T/S specs just as you would with any woofer. You may have to use a ten to get the Sd close.
      dia - 12"
      Sd 50 sq in.
      Mmd - 27.1
      Cms - .002409
      Vas - 296.55 l
      Fs - 18.9
      Re - 4.48
      Le - .10
      Bl - 6.05
      Qts - .413
      Xmax - 2.9
      Bill, I've been away from speaker design for a few years. I was wondering if anyone had already done the "legwork" and found a decent solution.

      Comment


      • #4
        You might try getting a hold of Huw at human speakers. Really knowledgeable about 70s & 80s speakers, he might be able rebuild them for you

        Comment


        • #5
          Your only (relatively "easy") option is to get a "refoam kit" for them (you can find them specifically for the orig. "Large ADVE\T").
          The "Q"ts range (in the 0.40-0.45 range) is not uncommon; the Fs range (20-25Hz) isn't either, but (as Bill said) those woofers use an oversize frame (given the cone area - in the 330 sq.cm. range) - Mr.K did that to get a lot of suspension travel. What's VERY uncommon (for a woofer this small) is the rather HUGE Vas values (around 6 to 7 cu.ft. for Qs near 0.45, and about 9-10 cf for Qs closer to 0.40). I don't believe anything like that is made today (unless you can find a Large Advent "replacement" woofer).

          Plus, if you don't use the orig. woofer, you'll have to do XO work.

          Comment


          • #6
            Originally posted by Chris Roemer View Post
            Your only (relatively "easy") option is to get a "refoam kit" for them (you can find them specifically for the orig. "Large ADVE\T").
            The "Q"ts range (in the 0.40-0.45 range) is not uncommon; the Fs range (20-25Hz) isn't either, but (as Bill said) those woofers use an oversize frame (given the cone area - in the 330 sq.cm. range) - Mr.K did that to get a lot of suspension travel. What's VERY uncommon (for a woofer this small) is the rather HUGE Vas values (around 6 to 7 cu.ft. for Qs near 0.45, and about 9-10 cf for Qs closer to 0.40). I don't believe anything like that is made today (unless you can find a Large Advent "replacement" woofer).

            Plus, if you don't use the orig. woofer, you'll have to do XO work.
            Thanks.

            Comment


            • #7
              Originally posted by devnull View Post
              You might try getting a hold of Huw at human speakers. Really knowledgeable about 70s & 80s speakers, he might be able rebuild them for you
              Thanks.

              Comment


              • #8
                If you want to "nuke and pave", I believe there is at least one Econowave variant using the Advent cab.

                Comment

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