Duo Symphonic 1930 Chassis and LS CX326

Duo Symphonic 1930 Chassis and LS; Lafayette Radio & TV (ID = 693947) Radio Duo Symphonic 1930 Chassis and LS; Lafayette Radio & TV (ID = 693949) Radio
Duo Symphonic 1930 Chassis and LS; Lafayette Radio & TV (ID = 693950) Radio
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Duo Symphonic 1930 Chassis and LS; Lafayette Radio & TV (ID = 693947) Radio
Lafayette Radio & TV: Duo Symphonic 1930 Chassis and LS [Radio] ID = 693947 933x646
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Pour le modèle Duo Symphonic 1930 Chassis and LS CX326, Lafayette Radio & TV Corp; New York (NY):
From Lafayette catalog 1930 season 1929/30 page 18.
Pays:  Etats-Unis
Fabricant / Marque:  Lafayette Radio & TV Corp; New York (NY)
alternative name
Wholesale Radio
Année: 1929/1930 Catégorie: Radio - ou tuner d'après la guerre 1939-45
Lampes / Tubes 9: CX326 CX326 CX326 CX326 C324 CX326 CX345 CX345 CX380
Principe général Récepteur TRF - sans réaction (pas régénératif); 2 Etage(s) BF; Neutrodyne
Circuits accordés 4 Circuits MA (AM)
Gammes d'ondes Ondes Moyennes (PO) uniquement.
Tension / type courant Alimentation Courant Alternatif (CA). / 110 Volt
Haut-parleur HP dynamique à aimant électrodynamique (avec bobine)
Puissance de sortie
De Modèle: Duo Symphonic 1930 Chassis and LS [CX326] - Lafayette Radio & TV Corp; New
Matière Boitier en bois
Remarques Both, "Radios Collector's Guide 1921-1932" (McMahon) and Rider's Perpetual volume 1 show this model under "Wholesale" instead of "Lafayette". See also "Duo Symphonic 1931" with dual volume control (antenna and AF stage) and "Great Duo Symphonic". According to McMahon, the Duo Symphonics have one untuned RF circuit and 3 tuned RF circuits - but Rider's shows clearly that it has 4 tuned circuits (4 gang tuning condenser) and two stages AF with push-pull output. In order that the model can be found by tube search with tubes CX326 or 226, we distinguish this otherwise same chassis here only! CX tubes are from Cunningham. The detector tube is the only screen grid tube C324 or a 224.

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 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. We don't know the tube line up, just that it has 2 tubes 245 for 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 list price for the chassis 9 tube Screen-Grid Duo-Symphonic incl. Utah Stadium Dynamic Speaker is $ 131.75 without tubes/aerial equipment or $ 156.50 with - but Lafayette puts a price of $ 64.50 or $ 76.64 all inclusive. There is no measurement given for this model. See details and summaries for the models of this catalog.
Prix de mise sur le marché 77.00 $
Source extérieure Ernst Erb
Source Radio Collector`s Guide 1921-1932
Source du schéma Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Schémathèque (1) Lafayette Radio Catalog (Wholesale Radio Service Co. Inc. catalog 1930 for 1929/30, page 18 - 31. 17.)

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