• Country
• United States of America (USA)

• Manufacturer / Brand
• National Company; Cambridge & Malden (MA)

• Year
• 1954

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 123256

• • alternative name: National Toy Co.
  • Brand: Thrillbox

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 2

• Valves / Tubes
• 12AX7 12AX7

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Horizon Pre-Amp-Control Unit 5 - National Company; Cambridge &

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 10.125 x 2.5 x 6 inch / 257 x 64 x 152 mm

• Notes

• The National Horizon 5 is a pre-amplifier/control unit with four input channels. Harmonic distortion is rated at 0.2% at 1.5V output.

  While it could be used as a stand-alone unit, the Horizon 5 was made to plug into the front of either the National Horizon Criterion tuner or the Horizon 20 or 20A amplifiers.

• Net weight (2.2 lb = 1 kg)
• 3 lb (3 lb 0 oz) / 1.362 kg

• Price in first year of sale
• 50.00 $

• Mentioned in
• Allied Radio Catalog (Knight) (1955 page 17)

• Literature/Schematics (1)
• The Radio-Electronic Master, 1956

• Author
• Model page created by Emilio Ciardiello. See "Data change" for further contributors.

• Other Models

• Here you find 446 models, 285 with images and 189 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Company; Cambridge & Malden (MA)