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  1. M

    Martin Logan Low Pass / Backplate Board

  2. M

    Martin Logan Low Pass / Backplate Board

    I have schematic which i received from ML for this low pass board. I am not sure how to check and what tools to use find the issue ..
  3. M

    Martin Logan Low Pass / Backplate Board

    Thanks Leporello. I already contacted ML and they are not making those boards anymore unfortunately.
  4. M

    Martin Logan Low Pass / Backplate Board

    One of My Martin Logan Vantage speaker is suddenly stopped working. I can hear only sound from panel but no bass from woofer. I swapped Woofer, circuit boards from working speaker to non working, and found that Low Pass Circuit board "BCFS9LPd" is bad (as shown in the picture). Can someone...
  5. M

    Martin Logan Vantage Amp board

    One of My Martin Logan Vantage speaker is suddenly stopped working. I can hear only sound from panel but no bass from woofer. I swapped circuit boards from working speaker and found that circuit board "BCFS9LPd" is bad (as shown in the picture). I contacted ML and they mentioned that whole...
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