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350 Duo-Symphonic

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ID = 163555

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Image ID = 693622 for Lafayette Radio & TV 350 Duo-Symphonic

Lafayette Radio & TV: 350 Duo-Symphonic [Radio] ID = 693622 462x933

From Lafayette catalog 1930 season 1929/30 page 30.

Country: United States of America (USA)	Manufacturer/Brand: Lafayette Radio & TV Corp; New York (NY)
Year: 1929 / 1930	Type: Radio or Tuner
Valves / Tubes	9: 226 226 226 226 224 226 245 245 280

Principle	Neutrodyne circuit TRF receiver; Screengrid 1926-1935
Tuned circuits	4 AM circuit(s);
Wave bands	Broadcast only (MW).
Details	Record Player (not changer)
Power type and voltage	Alternating Current supply (AC) / 50 to 60 cycles, 105 - 120 Volt
Loudspeaker/pwr.out	Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 31.1 cm = 12.25 inch
from Radiomuseum.org	Model: 350 Duo-Symphonic
Material	Wooden case
Shape	Console, Lowboy (legs < 50 %).
Dimensions (WHD)	27.5 x 45.5 x 16 inch / 699 x 1156 x 406 mm
Notes	The catalog 1930 for season 1929/30 names this 9 tube TRF chassis a "Screen-Grid Neutrodyne Neutrodyne-Beers Double Primary". The Lafayette Duo-Symphonic Screen-Grid has a "special Utah Stadium Dynamic-Speaker chassis" producing from 30 to 5000 cycles, linear power detection and local distance switch. Push-pull operation. The same chassis is used for Lafayette Duo-Symphonic models 342, 316, 324, 370, 343, 300, 362, 357, 325, 329, 350 and 352, a Phono-Radio Combination. The Lafayette Duo Symphonic is in fact using the Wells-Gardner & Co chassis model C or CG, first type. You see this clearly by comparing the Rider's schematic Wells-Gard. page 1-1 and 1-2 (see versions) with the schematic "Wholesale" page 1-2. It is the "Old Type" schematic. Nevertheless, Lafayette describes this the following way: "The problems of our engineers was not only to build a receiver that would outperform anything in the world, but to build the dame receiver at a price that would bring it within reach of the average home." The list price for the model 350 Duo-Symphonic Phono-Radio is $ 266.50 without tubes/aerial equipment or $ 291.25 with - but Lafayette puts a price of $ 130.50 or $ 142.64 all inclusive. See details and summaries for the models of this catalog.

This model was suggested by Ernst Erb.

All listed radios etc. from Lafayette Radio & TV Corp; New York (NY)
Here you find 962 models, 738 with images and 346 with schematics.