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Thread: Tweeter blown?

  1. #1
    New Member
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    Oct 2007
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    San Jose, CA
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    Tweeter blown?

    I have a pair of B-52 PA-15x high end speakers. They are rated at 650 watts. I noticed just today that one of the high-frequency drivers is distorting at nowhere near this output and the amp is nowhere near it's 500 watt rating into 8ohms. Can I assume that the tweeter is blown or is there some other possible cause?

  2. #2
    I don't know who makes B-52's so I can't look it up, but yes, another possibility is the crossover. This is the circuit in a speaker that divides the highs from the lows.
    'I think my intimate relationship with electronics started as a child when I was playing with a screwdriver and a wall plug, Doc, and...'

  3. #3
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    Oct 2007
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    Blown Tweeter/Crossover?

    I think you might be right. It's certain kinds of intense upper mids that are causing the distortion. Is it relatively easy to replace a crossover? Easy to test that?

  4. #4
    Just switch it with the one in the other speaker if that one works. If the distortion goes away it's the speaker. If not it's likely the crossover (x-over for short). Try it and post back.
    'I think my intimate relationship with electronics started as a child when I was playing with a screwdriver and a wall plug, Doc, and...'

  5. #5
    New Member
    Join Date
    Oct 2007
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    San Jose, CA
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    Blown Tweeter?

    Yep, it's the high-frequency driver. The previous owner must have over-driven in in Bi-amp mode. It's only rated to 150 watts in that mode. I hope I can order just the driver, and it doesn't cost too much. Thanks for the help.

  6. #6
    You are welcome!
    'I think my intimate relationship with electronics started as a child when I was playing with a screwdriver and a wall plug, Doc, and...'

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