• Year
  • 1950 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 357608

 Technical Specifications

  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Mixer Unit EM49A - Simon Sound Services Ltd;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 14 x 9.5 x 5 inch / 356 x 241 x 127 mm
  • Notes
  • A four-channel electronic mixer employing the latest type of low-noise valves.
    Three microphone channels and one pick-up or radio channel, each with an independent fader, are provided.


    Characteristics:
    Input 1,2,3:  20 Ω at 70 microvolts.
    Input 4:        50 kΩ at 300 millivolts.
    Output:        1 Volt. Impedance 5.5 kΩ.
    Noise Level: -60 dB approx. at full output.
    Response:   ± 1 dB. 50 Hz to 20 kHz.

  • Net weight (2.2 lb = 1 kg)
  • 10 lb (10 lb 0 oz) / 4.540 kg
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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