Fixing a speaker

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  • crokett
    The Full Monte
    • Jan 2003
    • 10627
    • Mebane, NC, USA.
    • Ryobi BT3000

    #1

    Fixing a speaker

    Is it worth trying to fix a speaker? I have a dead speaker on my stereo. No sound at all. It is a KLH, not too fancy just a small 2-way I use for the front channels. Whatever I do I'd have to remove the speaker and go in that way - there is not a way to take the case apart.
    David

    The chief cause of failure in this life is giving up what you want most for what you want at the moment.
  • cabinetman
    Gone but not Forgotten RIP
    • Jun 2006
    • 15216
    • So. Florida
    • Delta

    #2
    Originally posted by crokett
    Is it worth trying to fix a speaker? I have a dead speaker on my stereo. No sound at all. It is a KLH, not too fancy just a small 2-way I use for the front channels. Whatever I do I'd have to remove the speaker and go in that way - there is not a way to take the case apart.

    It could be something simple, like a connection, or break in one of the wires.
    .

    Comment

    • eccentrictinkerer
      Senior Member
      • Aug 2007
      • 669
      • Minneapolis, MN
      • BT-3000, 21829

      #3
      Servicing speakers through the main speaker opening is s.o.p. A quick check with a ohmmeter will tell you if the voice-coil is intact (a AA battery with a couple of test leads works, too) just listen for click or thump). Some speakers have fuses on the crossover board. Worth a look.

      Re-building the speaker is usually very expensive. Try www.partsexpress.com for suitable drivers. If your enclosure is closed-box design most any speaker with the same diameter and magnet weight should work. It won't be optimum as designed, but usually they sound fine, unless you're a "Golden Ears" type.

      Also, it's a good idea to replace speakers in both boxes at the same time to maintain balance.
      You might think I haven't contributed much to the world, but a large number
      of the warning labels on tools can be traced back to things I've done...

      Comment

      • Knottscott
        Veteran Member
        • Dec 2004
        • 3815
        • Rochester, NY.
        • 2008 Shop Fox W1677

        #4
        An inexpensive speaker like that may not be worth replacing drivers, but it doesn't hurt to check the connections, circuit breakers, fuses, etc. for continuity.
        Happiness is sort of like wetting your pants....everyone can see it, but only you can feel the warmth.

        Comment

        • chopnhack
          Veteran Member
          • Oct 2006
          • 3779
          • Florida
          • Ryobi BT3100

          #5
          As with all other consumer electronics, replace rather than repair ;( I know its wasteful, but they leave you with little choice when it comes to dollars and cents.
          I think in straight lines, but dream in curves

          Comment

          • LCHIEN
            Super Moderator
            • Dec 2002
            • 21981
            • Katy, TX, USA.
            • BT3000 vintage 1999

            #6
            Originally posted by eccentrictinkerer
            Servicing speakers through the main speaker opening is s.o.p. A quick check with a ohmmeter will tell you if the voice-coil is intact (a AA battery with a couple of test leads works, too) just listen for click or thump). Some speakers have fuses on the crossover board. Worth a look.

            Re-building the speaker is usually very expensive. Try www.partsexpress.com for suitable drivers. If your enclosure is closed-box design most any speaker with the same diameter and magnet weight should work. It won't be optimum as designed, but usually they sound fine, unless you're a "Golden Ears" type.

            Also, it's a good idea to replace speakers in both boxes at the same time to maintain balance.
            good advice here.
            Loring in Katy, TX USA
            If your only tool is a hammer, you tend to treat all problems as if they were nails.
            BT3 FAQ - https://www.sawdustzone.org/forum/di...sked-questions

            Comment

            • Uncle Cracker
              The Full Monte
              • May 2007
              • 7091
              • Sunshine State
              • BT3000

              #7
              Some speakers are manufactured with non-serviceable fuses (fusible links, they're called) wound into the voice coils. These are one-time-blow and then junk the speaker. The ohmmeter will tell you if the coil is open.

              Comment

              • eccentrictinkerer
                Senior Member
                • Aug 2007
                • 669
                • Minneapolis, MN
                • BT-3000, 21829

                #8
                Addendum to my previous post.

                I'm a fan of vintage name-brand speakers. KLH, Infinity, JBL. etc.

                Many of these old brand names have sold to companies selling crappy speakers in molded cases. They usually aren't worth saving.

                I have a pair of small KLH bookshelf speakers in my shop that never fail to impress visitors, and they're 20 years old! If anything happened to them, I'd rebuild them in a heartbeat.
                You might think I haven't contributed much to the world, but a large number
                of the warning labels on tools can be traced back to things I've done...

                Comment

                • crokett
                  The Full Monte
                  • Jan 2003
                  • 10627
                  • Mebane, NC, USA.
                  • Ryobi BT3000

                  #9
                  My speakers aren't 20 years old, they are 8 years old. I will crack the speaker when I don't have anything else to do and take a look at it.
                  David

                  The chief cause of failure in this life is giving up what you want most for what you want at the moment.

                  Comment

                  • BigguyZ
                    Veteran Member
                    • Jul 2006
                    • 1818
                    • Minneapolis, MN
                    • Craftsman, older type w/ cast iron top

                    #10
                    Personally, I got into WWing from speaker building. So, if it's not a simple matter of repairing a connection or a capacitor or something like that- I'd take advantage and build your own! If you're interested, I can point you to some good resources...

                    Comment

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