High impedance electromagnetic loudspeaker
With burnished metal body and cast metal base. Quadripolar electromagnetical reed system. A screw on the front of the speaker can be used to adjust the speaker optimally. The speaker consists of three parts. The front and rear flanges are fitted on the middle part with a bayonet system.
The loudspeaker was also made for AGA-Baltic in Sweden.
Tefag; Telephon Aktiengesellschaft vorm. J. Berliner, starts making radios and loudspeakers  in 1923. Standard Elektrizitätsgesellschaft (SEG), an ITT company, takes over Tefag and other companies, like Schuchardt, Lorenz and Mix & Genest around 1930. There is not much difference in the design of products of the individual companies after this date. Production stops after WWII.
Made in: ±1927

Purchased in: 2016
Sold in: 2022
Dimensions (h x w x d): 40 x 31 x 14 cm
DC resistance: 2680 Ohm
Weight: 3.1 kg

What was broadcast in 1927?


Listen to "Ich red' mir ein, es geht mir gut" sung by Max Hansen with orchestra, recorded on January 13, 1927

Back of the loudspeaker with back shell removed
Front of the loudspeaker with front shell removed
A view of the loudspeaker driver unit
Tefag logo on the base of the speaker

This page was last edited on 25.12.2022