Dunno, just found the thread in a quick search and posted it.
Make a 2x longer tapered reducer than the driver's internal one to minimize reflections back to the internal throat or align bore the horns after adding an epoxy layer [or four] of fiberglass matte around the exterior assuming the flange is large enough to safely mount/support a 2xx.
Otherwise, there will be a lot of reflections from the mouth back to the horn's throat and a separate set of much higher frequency reflections between the horn throat and the driver's internal one, but never having done any experimenting can only say that folks with keen hearing should theoretically have no trouble hearing a difference if one could make a suitable comparison, though the reality is that the worst case scenario probably will be just a lower extreme HF output; i.e. what happened when I mounted an 802 to an 805 multi-cell with just a gasket.
GM
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+1Originally Posted by Old Guy
, beat me to it, this is what I meant by 'align bore', then saw your link as I going to go search for one to link.
GM
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