I have heard of TDL speakers, which according to their history: http://www.tdl-loudspeakers.co.uk/history.htm, was founded by John Wright (1) , who later went on to be one of the three new owners of IMF when the UK bought out the IMF name after the UK division parted company with the US parent company (https://en.wikipedia.org/wiki/Transm...ne_loudspeaker).
I'm not sure what the initials TDL stand for, but it is quite likely the 'T' is 'Transmission', and the name evolved to become 'Transmission Electronics'. So in that respect they could be regarded as being "classic vintage speakers".
(1) In the cited history of TDL speakers it is claimed that John Wright invented the concept of transmission line loudspeakers. This is incorrect, the claim ought to go to Dr Bailey, a lecturer at Bradford University who worked in conjunction with Arthur Radford to design the Radford loudspeakers, as well as the Radford SS amplifier: the STA30.

