Located the wiring for the front highs... some 9 years or so after it was drawn.... but unfortunately one of the speakers (Carlsson OA51LE) aren't playing the bass driver anymore... something has happened while alone on the shelf for a number of years.... it played last time tested. Pity. I do have two leftovers of the kind I got for the auro-layer, so it's not a showstopper - but they're quite a step down in quality. But I can deal with that later on and that's quite a relief at this point.
Replacing just the driver would be sort of a stupid move too... there are upgrade plans available to get those speakers quite a bit improved, but that would be a full complement of drivers and new filters for that... so not the kind of cash I feel like forking out after the proj and the receiver to be paid off...