Sell them and replace them with something better suited to your new use case. If you are having built-in cabinets constructed, get speakers that will perform properly in that context. MoFi Pointsource or KEF, Fyne, or Tannoy all make “coincident” drivers that radiate the same polar power regardless of orientation. Without a floor plan and cabinet drawing, that’s the best I can do. One thing’s for sure…laying Olympica IIIs on their sides is lunacy.
