SQ5 preamp repair

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    Profile photo of Dean

    I just repaired the 4 bad preamps in my SQ5 by swapping the preamp printed circuit board. I have a theory about what may have caused the problem.

    Here is a thread that sheds some light on this, though it may also add confusion without verification.

    Toggle phantom power

    The 4 preamps I had a problem with were the only channels where I used phantom powered DI boxes. They were the Behringer Ultra DI DI100. I think the boxes sound great (transparent) but may have caused this problem. I have hot swapped phantom powered mics on other channels many times without a problem. I’ve swapped those DIs for passives after this thought.

    It would be great if anyone else has info or experience to share.


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