• País
• Estados Unidos

• Fabricante / Marca
• Crosley Radio Corp.; Cincinnati (OH)

• Año
• 1922

• Categoría
• Amplificador de audio o mezclador

• Radiomuseum.org ID
• 36641

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

• Numero de valvulas
• 2

• Válvulas
• UV201 UV201

• Principio principal
• Amplificador de Audio; 2 Etapas de AF

• Gama de ondas
• - no hay

• Tensión de funcionamiento
• Baterías recargables o pilas / Storage Battery 6 & dry 45 Volt

• Altavoz
• - Este modelo usa altavoz exterior (1 o más).

• Material
• Madera

• de Radiomuseum.org
• Modelo: Two-Step Amplifier or 2-stage Audio Amp. [first version: front switch] - Crosley Radio Corp.;

• Forma
• Sobremesa, caja, normalmente con tapa (panel no inclinado).

• Ancho, altura, profundidad
• 11.5 x 6 x 4.875 inch / 292 x 152 x 124 mm

• Anotaciones
• This is the early version of the "Two Step Amplifier" as it was officially called in ads. It is sometimes named 2-stage audio amplifier (or Amp.). In the middle of the two knobs for the two stations, there is a front panel switch to select one or two stages of amplification. Box has overhanging lid. There are at least three different versions regarding engraving: First version February 1922 with market introduction: straight without special logo: "Crosley two step amplifier" in one line. Second version May 1922 - engraving in two lines. Third version: Later or on the same time it was available without any engraving for the name. In 1923 it was not anymore on the market.
  
  Here is a link to some sources for this model.
  Later models have no such switch on the front and are a bit cheaper. The lid is integrated and without overhang. Those later models could be bought with or without engraving "Crosley Cincinnati TWO STEP AMPLIFIER" (including the logo) - with a price difference of one $.
  
  The first catalog, early 1922, tells us that the two-step Amplifier can also be bought unmounted for $ 22.50 instead of $ 25 - and that the "amplifier cabinet is designed to match up uniformly with either the CROSLEY Detector Unit, the HARKO JUNIOR or the HARKO SENIOR."

• Precio durante el primer año
• 25.00 $ +

• Ext. procedencia de los datos
• Ernst Erb

• Procedencia de los datos
• Radio Collector`s Guide 1921-1932

• Mencionado en
• Radio Manufacturers of the 1920s, Vol 1 (pp.113, 115)

• Documentación / Esquemas (1)
• Radio Broadcast, May 1922, page 81

• Documentación / Esquemas (4)
• Radio News (February 1922, page 725.)

• Otros modelos

• Donde encontrará 1807 modelos, 1050 con imágenes y 1301 con esquemas.
  Ir al listado general de Crosley Radio Corp.; Cincinnati (OH)