• País
• Gran Bretaña (GB)

• Fabricante / Marca
• BTH (B.T.H.), British Thomson-Houston Co, Ltd.

• Año
• 1927 ?

• Categoría
• Altavoz, cascos o auricular

• Radiomuseum.org ID
• 187287

• Gama de ondas
• - no hay

• Tensión de funcionamiento
• Red: Corriente alterna (CA, Inglés = AC)

• Altavoz
• Altavoz electrodinámico (bobina de campo)

• Material
• Metálico

• de Radiomuseum.org
• Modelo: Rice-Kellogg Loudspeaker RK - BTH B.T.H., British Thomson-

• Forma
• Chasis (tambien de autoradio)

• Ancho, altura, profundidad
• 310 x 310 x 240 mm / 12.2 x 12.2 x 9.4 inch

• Anotaciones
• Since 1926 BTH manufacures the moving coil loudspeaker. For use with either AC or DC, the unit incorporates the output amplifier as well as the mains equipment giving the necessary high anode voltage, exceeding 400, while the grid bias is also obtained from the mains. The electro-magnet is of large diameter, the pole being about 1 5/8 inch across. A supple centring device holds the coil in position, and the diaphragm is about 6 inch in diameter. Plunger operated contacts break all current supply circuits by the act of removing the unit from its containing cabinet.
  Excitation field with Selenium rectifier. R-K = Rice-Kellogg.
  A video about the first Rice-Kellogg Prototype at YouTube.

• Peso neto
• 13.6 kg / 29 lb 15.3 oz (29.956 lb)

• Mencionado en
• Wireless World (The), London (WW, 79)

• Autor
• Modelo creado por Sándor Selyem-Tóth. Ver en "Modificar Ficha" los participantes posteriores.

• Otros modelos

• Donde encontrará 40 modelos, 35 con imágenes y 5 con esquemas.
  Ir al listado general de BTH (B.T.H.), British Thomson-Houston Co, Ltd.