Siemens 30 cm full range driver with leather surroundThere is no written hint or stamp on this driver to suggest that it was made by Siemens/Tfk. But I do believe that this is the case. The shape of the butterfly damper, the shape of the cone, the structure of the paper, the architecture of the frame, the way the wires are stiched to the cone...All this evidence is pointing at Siemens. 15 Ohms, steel frame.
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