Stereo Preamplifier M60

Shure; Chicago, Evanston, Niles (IL)

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  • Year
  • 1960
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 184794

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

 Technical Specifications

  • Number of Tubes
  • 1
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 115-125 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Preamplifier M60 - Shure; Chicago, Evanston,
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 167 x 86 x 57.2 mm / 6.6 x 3.4 x 2.3 inch
  • Notes
  • The Shure M60 Stereo Preamplifier is a high quality, flat amplifier designed primarily to allow the phono cartridge to be used at a distance from the control preamplifier. The M60 preamplifier matches the impedance of the phono cartridge and has dual input and dual low impedance outputs so that up to 50 (15.2 m) feet of cable (30MMFD per foot) can be used between the M60 preamplifier and the main control center with no noticeable deviation in the entire audio frequency response. The M60 has 17db gain (per channel) to overcome any losses in signal transmission. The additional gain by use of the preamplifier, also, reduces the hum and noise very often present in certain high fidelity systems.
    Gain: 17db per channel–5 millivolts input produces 35 millivolts output.
    Frequency Response: ±1db from 30 to 80,000 c.p.s.
    Equalization: None
    Input Impedances: 47,000 ohms
    Output Impedances: 5,000 ohms
    Hum and Noise Level: 64db below rated output
    Distortion: Less than 0.14% 1000 c.p.s. at rated output
    Separation Between Channels: 30db
    Channel Balance: ± 1 db.

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