Do any of our European members know anything about these drivers or this company? I did a search of LH and found no reference to them, so another new thread.
Their website has field coil and Alnico drivers, many full range. Their construction can be very unusual, including wood spiders and cones, composite cones and leather surrounds.
I get the feeling they are very expensive. If it is not against the rules to post a link to a commercial site, here is theirs. For some reason they do not sell within the EU.
http://www.field-coil.com/#field_coil
http://www.field-coil.com/about/
Clark