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122a

  1. C Hart

    Moving mass (MMD and MMS) Calculation - JBL 122A-1 recone

    Hi AKers. I have a simple question for driver mavens: How much of the surround and spider weight should be included in calculating moving mass? Background: I am doing my first recone on a buzzing JBL 122A-1 woofer from an L166. The last service on this driver made a mess of it and I am...
    • C Hart
    • Thread
    • 122a aquaplas jbl mass ring recone
    • Replies: 8
    • Forum: Speakers
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