I was asked whether a wide bridge covering the piezo under the lid will sound different than a bridge covering the same area but with gaps as seen with three contact points?
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like most things it's a balancing act
the bigger the footprint the bridge has on the soundboard, the more it dampens the sound, just like adding more bracing on the underside. the smaller the footprint the bridge has on the soundboard, the more likely it is to crush into and dimple/divot/gouge the soundboard.
commercial acoustic guitars have that big rectangular bridge because anything smaller would not be able to distribute the tension load enough, it tilts forward distorting the face and then the glue partially gives way and the ply delaminates and it takes some wood with it and at that point you salvage parts ( sad story from my teen years )
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