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Free crossover from inside speaker cabinet?

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  • Free crossover from inside speaker cabinet?

    I'm trying to free the crossover inside an old Boston Acoustics VR40 cabinet so that I can check the tweeter cap. First time at this.

    The crossover is assembled on a thin board that appears to be hot-melt glued to the back of the inside of one of the smaller woofer chambers. I don't quite know how to get a tool in there to free it as there is not a lot of clearance on either side to reach in and push on the board from the side.

    What's the simplest/safest way to free this board?

    thanks,

  • #2
    Chances are you have to remove a driver or two to access the inside of the cab.
    www.billfitzmaurice.com
    www.billfitzmaurice.info/forum

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    • #3
      Thanks for the comment, yeah I got access to the board by removing the woofer.

      The problem is that the board isn't attached with screws or an easily disconnected attachment device.

      As near as I can guess I would need to shock the board enough to break the hot melt holding it to the inside back wall of the cabinet.

      If I do that, I am concerned that I might break the wiring on the crossover network more than I need do.

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      • #4
        Try a heat gun. Possibly from the outside, the backside of whatever surface the board is attached to, or direct into the interior. Hot glue doesn't need super hot temp to soften.

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        • AEIOU
          AEIOU commented
          Editing a comment
          Excellent suggestion.

      • #5
        I've read that rubbing alcohol and acetone also work. I'd be careful to not dissolve the caps, though.
        Francis

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        • #6
          Ah, isn't it lovely, some of the sloppiest crossovers ever!

          Click image for larger version  Name:	DSCF0910.jpg Views:	0 Size:	580.0 KB ID:	1457083

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          • #7
            Try using a hot nichrome wire looped around the board and pulled through the glue.

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            • #8
              Click image for larger version

Name:	Screwdriver.png
Views:	56
Size:	104.9 KB
ID:	1457098

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