you could buy some copper plates and 'diy' them to fit the binding post to do so. after run-in then you should consider to take the tailor-made copper plates to have gold plating .
Why not contact your Proac dealer, or the distributor near you, or Proac themselves? I'm sure the bridges aren't too expensive, and if for some reason you ever decided to sell your speakers having the orginal bridges will make it easier to sell (and retain more of the original value as well). Jeff
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