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Locating speaker wire behind drywall

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  • Locating speaker wire behind drywall


    Recently did a home renovation and had the contractor run speaker wire while the walls were open. Now they're no longer open and I'm not 100% certain where the wire ends inside the walls. Is there a reliable probe / signal generator that I can use to trace where the wire goes, given that it's buried behind the drywall? Anyone have specific experience with a device that worked for this?
    Thanks,
    - Dan

  • #2
    That's why


    > Recently did a home renovation and had the
    > contractor run speaker wire while the walls
    > were open. Now they're no longer open and
    > I'm not 100% certain where the wire ends
    > inside the walls. Is there a reliable probe
    > / signal generator that I can use to trace
    > where the wire goes, given that it's buried
    > behind the drywall? Anyone have specific
    > experience with a device that worked for
    > this?

    you either go in ahead of time and mount your gangboxes yourself, or if the contractor won't let you, pay their wiring guy to do that when he wires. In my first house I did the former; in my second, because the contractor claimed for liabilty reasons he could not let me do it, I did the latter. P-----d me off, but I paid for it.
    I love it when a plan comes together.

    Comment


    • #3
      Re: Locating speaker wire behind drywall


      Well, I haven't ever located an in-wall speaker line, but, I have had to locate breaks in my undergroung invisible fence (gotta protect the pooches). Basically the brain module of the fence can send pulses down the line (which is just an antenna) and you follow the line with a hand held radio until you can't hear the pulses anymore, that is where the break will be located. I don't see why a similar method couldnt be used in your situation. Good luck

      > Recently did a home renovation and had the
      > contractor run speaker wire while the walls
      > were open. Now they're no longer open and
      > I'm not 100% certain where the wire ends
      > inside the walls. Is there a reliable probe
      > / signal generator that I can use to trace
      > where the wire goes, given that it's buried
      > behind the drywall? Anyone have specific
      > experience with a device that worked for
      > this?
      > Thanks,
      > - Dan

      Comment


      • #4
        Re: Locating speaker wire behind drywall


        > Recently did a home renovation and had the
        > contractor run speaker wire while the walls
        > were open. Now they're no longer open and
        > I'm not 100% certain where the wire ends
        > inside the walls. Is there a reliable probe
        > / signal generator that I can use to trace
        > where the wire goes, given that it's buried
        > behind the drywall? Anyone have specific
        > experience with a device that worked for
        > this?
        > Thanks,
        > - Dan

        They do have such a device, but you don't...

        I say take your best guess and make a small hole to verify. If you guess wrong, just patch the small hole and guess again: )

        Dave

        Comment


        • #5
          devices to do that are fairly common *PIC*



          Provided Link: Tone and Probe Kit


          they fall under names like Fox and Hound, Tone and Probe Kits and the like.
          I am fairly sure you can find these at Lowes or Home Depot, but the price may be a bit high.

          Search the PE site for "wire tracing", if that doesn't work, their evil competitor has a few to choose from:

          Comment


          • #6
            Re: devices to do that are fairly common


            > they fall under names like Fox and Hound,
            > Tone and Probe Kits and the like.
            > I am fairly sure you can find these at Lowes
            > or Home Depot, but the price may be a bit
            > high.

            > Search the PE site for "wire
            > tracing", if that doesn't work, their
            > evil competitor has a few to choose from:

            Not sure that would work. Typically you have to get within 1/2 inch or so to the wire to pickup the "tweedle" tone.
            Still - give it a try. You can always return it, even if it works perfectly.....

            -Don

            I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
            "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

            High value, high quality RS150/TB28-537SH bookshelf - TARGAS NLA!
            SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM
            My Voxel min sub Yet-another-Voxel-build

            Tangband W6-sub

            Comment


            • #7
              Re: Big Holesaw


              > They do have such a device, but you don't...

              > I say take your best guess and make a small
              > hole to verify. If you guess wrong, just
              > patch the small hole and guess again: )

              > Dave

              A big hole is just as easy to cut and easier to patch. I like a big holesaw for stuff like this. I
              f you're right you can get your arm in there and do what you need to. If you're wrong, put the plug back and it's easy to patch. Just find the studs first and miss them. You should have the wires found in no time.

              bb

              Since we cannot know all that there is to be known about anything, we ought to know a little about everything.
              - Blaise Pascal (1623 - 1662)

              Comment


              • #8
                Common stud finder will do it...


                ...costing less than $20. They all detect density changes AND metal in interior walls.

                Good luck!
                None are more hopelessly enslaved than those who falsely believe they are free

                Comment


                • #9
                  Re: Common stud finder will do it...


                  > ...costing less than $20. They all detect
                  > density changes AND metal in interior walls.

                  > Good luck!

                  I second this motion, as long as the wires were pinned up close to the front of the stud.

                  If this was done recently enough the contractor might remember where the wires ended, or at least be able to ball park it.

                  Other than that, I think you're looking at cutting the drywall and guessing yourself.

                  Comment


                  • #10
                    Re: Locating speaker wire behind drywall


                    When I wire for speakers I usually drill a hole in the wall cavity (between wall studs) in the attic top plate (2 ea 2x4's on top of each other) and drop straight (plumbob) down to the exit location. In other words crawl up in the attic and locate drop locations. Note: will not apply to horizontal in wall routing.

                    HTH,

                    Mike

                    Comment


                    • #11
                      Re: Locating speaker wire behind drywall


                      Phone guys have this stuff as standard equipment. Look at telecommunication supply sites for cable type tone generators (warble signal generators) and inductive probes. The probe is a handheld wand type device with an amplifier in it.

                      Murray

                      > Recently did a home renovation and had the
                      > contractor run speaker wire while the walls
                      > were open. Now they're no longer open and
                      > I'm not 100% certain where the wire ends
                      > inside the walls. Is there a reliable probe
                      > / signal generator that I can use to trace
                      > where the wire goes, given that it's buried
                      > behind the drywall? Anyone have specific
                      > experience with a device that worked for
                      > this?
                      > Thanks,
                      > - Dan

                      Comment

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