Two-Step Amplifier or 2-stage Audio Amp. first version: front switch
Crosley Radio Corp.; Cincinnati (OH)
- País
- Estados Unidos
- Fabricante / Marca
- Crosley Radio Corp.; Cincinnati (OH)
- Año
- 1922
- Categoría
- Amplificador de audio o mezclador
- Radiomuseum.org ID
- 36641
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- Numero de valvulas
- 2
- 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
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Ir al listado general de Crosley Radio Corp.; Cincinnati (OH)
Colecciones
El modelo Two-Step Amplifier or 2-stage Audio Amp. es parte de las colecciones de los siguientes miembros.