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Brand
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Counterphase | ||||
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Year: 1927 | Category: Loudspeaker, headphone or earphone |
Wave bands | - without |
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Details | |
Power type and voltage | No Power needed |
Loudspeaker | Magnetic loudspeaker (reed) generic. / Ø 20 cm = 7.9 inch |
Power out | |
from Radiomuseum.org | Model: Speaker [magnetic] - Bremer-Tully Mfg. Co.; Chicago |
Material | Wooden case |
Shape | Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only). |
Dimensions (WHD) | 285 x 310 x 195 mm / 11.2 x 12.2 x 7.7 inch |
Notes | There is also a dynamic version. Membrana conica in cartoncino con incollatura radiale. Sospensione in pelle di daino. Filtro passabasso acustico ed elettrico |
Net weight (2.2 lb = 1 kg) | 3.9 kg / 8 lb 9.4 oz (8.59 lb) |
Price in first year of sale | 35.00 $ |
Source of data | - - Data from my own collection |
Mentioned in | Classic Cones |
Literature/Schematics (1) | Radio Manufacturers of the 1920s, Vol 1 (p.92,93) |
Model page created by Francesco Ferrari. See "Data change" for further contributors.
All listed radios etc. from Bremer-Tully Mfg. Co.; Chicago (IL)
Here you find 46 models, 14 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.