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Making a Active Speaker Passive

Discussion in 'd.i.y.' started by Space is the Place, Nov 2, 2017.

  1. david ellwood

    david ellwood Kirabosi Kognoscente

    If there isn't room in the box for a bigger transformer why not mount one remotely?
  2. Space is the Place

    Space is the Place pfm Member

    That was ths plan, but Canterbury are choc-a-bloc till after Xmas, not that im in rush or anything just thought it'd give me something to do myself, and i believe that the amp packs are the weakest link for longevity.

    Yes though about making putting the transformer out board of modifying the mounting plate to fit a bigger one.
  3. Shadders

    Shadders pfm Member

  4. Space is the Place

    Space is the Place pfm Member

    Thanks, I might just do that, still waiting to hear back from everyone regarding the transformers i've emailed, what's the worst that can happen right? ;)

  5. Space is the Place

    Space is the Place pfm Member

    Measured the output on the working transformer and it's 22V not loaded or plugged into anything, so will look to see if there is a replacement available that will fit in the rather limited space inside the monitor.
  6. Shadders

    Shadders pfm Member


    To be confirmed by others, 22volts at 87% efficiency, is approximately 19volts on load. So a COTS 18v transformer should be acceptable - assuming a bridge rectifier - 1.2volts dropped should be ok for the 18volts requirement.


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