• Country
• United States of America (USA)

• Manufacturer / Brand
• Ballantyne Company, The; Omaha (NE)

• Year
• 1950 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 138124

• • Brand: Royal Sound Master

• Number of Tubes
• 9

• Valves / Tubes
• 6J5 6SN7GT 6B4G 6B4G 5514 5514 5Y3GT 5R4GY 5R4GY

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 165 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Sound Master Royal RX 224 - Ballantyne Company, The; Omaha

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Notes
• Theater power amplifier.

• Net weight (2.2 lb = 1 kg)
• 29.5 kg / 64 lb 15.6 oz (64.978 lb)

• Source of data
• -- Collector info (Sammler)

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ballantyne Company, The; Omaha (NE)