• Country
• United States of America (USA)

• Manufacturer / Brand
• Marantz (Sound United LLC); Vista, CA

• Year
• 1973

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 113556

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

• Number of Transistors
• 80

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 100; 120; 220 Volt

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

• Power out
• 500 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Stereo Power Amplifier 500 - Marantz Sound United LLC;

• Shape
• Rack

• Dimensions (WHD)
• 425 x 171 x 435 mm / 16.7 x 6.7 x 17.1 inch

• Notes
• The Marantz 500 was a monster amplifier of the early seventies and one of the last equipment designed and built by the early group in Sun Valley, CA, USA. The panel was brushed, gold anodized and black enamel. The meters were blue.
  Its specifications were quite exceptional, with over than 250 Watts RMS per channel into 8 ohm loads, 20 Hz to 20 kHz. The total harmonic distorsion was under 0.05 %, the power bandwidth 5Hz to 45 kHz at 0.1 % THD, the damping factor greater than 400, the hum and noise better than 106 dB below 250 W.
  The power supply included a 2.2 kW tranformer and computer grade electrolytic capacitors capable of storing energy in excess of 280 joules. A delay circuit for limiting to 50 A the AC inrush current was operated at power-on.

• Net weight (2.2 lb = 1 kg)
• 39.6 kg / 87 lb 3.6 oz (87.225 lb)

• Mentioned in
• - - Manufacturers Literature

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

• Other Models

• Here you find 568 models, 559 with images and 90 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marantz (Sound United LLC); Vista, CA