(Topic ID: 25180)

Adding a subwoofer to pinball

By Sgtmax

11 years ago


Topic Heartbeat

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  • 64 posts
  • 36 Pinsiders participating
  • Latest reply 6 years ago by wayout440
  • Topic is favorited by 28 Pinsiders

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    #29 10 years ago

    What is the easiest way to tell the + from the - on the internal sub on both Bally/Williams and Stern? I don't recall seeing them labeled. Trial and error? Does this cause any damage if you guess wrong?

    Thanks, Dave

    #34 10 years ago
    Quoted from vid1900:

    If you make the sub out of phase you lose bass due to phase cancellation .
    Look closely at the speaker and note the stamped +- on the terminals.

    Hmmm, Thanks, I will look closer, I have seen some marked, but not all.

    Thanks for the Tip!! Much appreciated!

    Dave

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