Markaudio Alpair 10.3 (?) in Pensil 10p hodgepodge

I'm finishing a pair of mystery speakers I bought some years ago advertised as Markaudio Alpair 10.3 in Pensils.

Upon closer inspection of their dimensions, the cabinets are Pensils intended for Alpair 10p. They're made from birch plywood, are assembled beautifully, and look like the ones sold by Kjf audio in Britain.

As regards the drivers, these have no brand markings on the bezel nor a sticker on the magnet. Some searching turned out that they're probably Markaudio 10.3 made for Unmonday, a Finnish company that sold its remaining stock after bankrupcy. Dimensions, however, comply with Alpair 10.2 (more precisely the thickness, i.e. length from back of magnet to bezel).

Hence my questions:
Is there any other way to see if the drivers are 10.2 or 10.3?

And would it be worthwhile to adapt the cabinets to suit the 'non-dedicated' drivers better? I won't be able to make them bigger, but will add some more bracing and while at it could also slightly tweak the internal dimensions. Any pointers re stuffing density would also be very welcome given the odd pairing.

FWIW I just enabled the drivers, which went great with acrylic markers and was rather fun... Will finish with microgloss.

All best,
Simon
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As regards the drivers, these have no brand markings on the bezel nor a sticker on the magnet. Some searching turned out that they're probably Markaudio 10.3 made for Unmonday, a Finnish company that sold its remaining stock after bankrupcy. Dimensions, however, comply with Alpair 10.2 (more precisely the thickness, i.e. length from back of magnet to bezel).
I'm thinking @Scottmoose may know something about these drivers and the company.

jeff
 
I shouldget my **** together and dig out the box of templates, the calibers, and post the measurements.

Ring placement can be found using the tap test.

In the case of the MA drivers, the cone shape is a series of radii, the rings fall where they join/blend together.

dave