• Country
• United States of America (USA)

• Manufacturer / Brand
• Valco Manufacturing Co.; Chicago

• Year
• 1948

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 249734

• • Brand: Oahu

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

• Number of Tubes
• 5

• Valves / Tubes
• 6J7 6SL7GT 6L6G 6L6G 5Y3GT

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Guitar Amplifier

• Power type and voltage
• Alternating Current supply (AC) / 110-130 Volt

• Loudspeaker
• 2 Loudspeakers / Ø 8 inch = 20.3 cm

• Power out
• 16 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: National 510 Ch= 510-10 - Valco Manufacturing Co.;

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 480 x 400 x 270 mm / 18.9 x 15.7 x 10.6 inch

• Notes

• The National 510 is an AC operated 5 tube amplifier.  Has Qty(2) PM 8" Jensen speakers in parallel with a separate control panel at the top of cabinet. Also has Qty(2) instrument inputs and a separate microphone input.

• Net weight (2.2 lb = 1 kg)
• 11.9 kg / 26 lb 3.4 oz (26.211 lb)

• Author
• Model page created by Hannes Gerber. See "Data change" for further contributors.

• Other Models

• Here you find 10 models, 10 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Valco Manufacturing Co.; Chicago