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Isonor ; Isophon, E. Fritz & (ID = 157367) Speaker-P
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Isonor ; Isophon, E. Fritz & (ID = 157367) Speaker-P
Isophon, E. Fritz &: Isonor [Speaker-P] ID = 157367 410x317
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For model Isonor, Isophon, E. Fritz & Co. GmbH.; Berlin:
Katalog Radio Fern, 1960
Country:  Germany
Manufacturer / Brand:  Isophon, E. Fritz & Co. GmbH.; Berlin
Year: 1956–1961 Category: Loudspeaker, headphone or earphone
Power type and voltage No Power needed /   Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out 4 W (unknown quality)
from Model: Isonor - Isophon, E. Fritz & Co. GmbH.;
Material Special material, described in the notes.
Shape Miscellaneous shapes - described under notes.
Dimensions (WHD) 340 x 290 x 90 mm / 13.4 x 11.4 x 3.5 inch

Wandlautsprecher, Gehäuse aus schalltotem Material; Lautsprecherchassis: ovales Spezialsystem; Frequenzbereich: 100...13.000 Hz; eingebauter Trafo (sek.: 5/10-15 Ω, prim.: 3000/4500/7000 Ω).

Net weight (2.2 lb = 1 kg) 1.580 kg / 3 lb 7.7 oz (3.48 lb)
Price in first year of sale 34.50 DM
External source of data Erb
Source of data Radiokatalog Band 2, Ernst Erb
Mentioned in -- Original prospect or advert (Katalog Radio Fern, 1960)

All listed radios etc. from Isophon, E. Fritz & Co. GmbH.; Berlin
Here you find 228 models, 217 with images and 31 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.