Mystery Drivers

Hi.
Does anyone know anything about theses drivers?
I can purchase them for a good price, and i am in need of a project to keep me busy.
Apparently a single 4 ohm used in a 15l box tuned to 49hz.
He has 8 and 4ohm.
They were built in CANADA, not off shore. They have Kevlar cones and 1-1/2" voice coils. They are well built and sound great in a two way or multi way system.

Apparently made by Cambridge in Ontario.

Thanks.
 

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