Integrated Stereo Amplifier Alpha 3

A&R Cambridge Ltd. (ARCAM); Waterbeach, Cambridge

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  • Year
  • 1991
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 312759

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 100; 120/220/240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 80 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Integrated Stereo Amplifier Alpha 3 - A&R Cambridge Ltd. ARCAM;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 84 x 248 mm / 16.9 x 3.3 x 9.8 inch
  • Notes

  • A stereo hi-fi integrated amplifier with output power of 40 watts per channel into 8 ohms. Bass and Treble tone controls with Direct tone bypass switch, Tape Monitor switch. RCA input sockets for Video, Tuner,  CD and Phono (MM cartridge), RCA input/output sockets for tape recorder. 4mm switched and direct sockets for 2 pairs of loudspeakers and a jack for headphones.

    Specification
    (Noise and sensitivities ref. 40W into 8 ohms at 1kHz.)
    Output Power (typical)  
    Both channels driven into 8 ohms:   40W (20Hz-20kHz at 0.5% THD)
    Single channel driven at lkHz into 8 ohms: 50W typ. Into 4 ohm 80W typ.
    Harmonic distortion: at 30W, 8 ohms at 1kHz 0.02% typ.
    Frequency Response
    Phono Input:    typ ±0.5dB 60Hz-20kHz,-3dB at 20Hz
    Other Inputs:   typ ±0.5dB 10Hz-20kHz
    Inputs
    Phono (suitable for MM and 'high-output' MC cartridges
    Sensitivity:          2.2mV, impedance 47k ohm/100pF
    S/N ratio CCIR:   75dB
    CD, tuner, tape and video
    Sensitivity:         170mV
    S/N ratio CCIR:   95dB
    Input impedance: 20k ohms
    Outputs
    Tape output
    Nominal output level: 150mV, impedance 2k ohm
    Headphones
    Maximum output level into 600 ohms: 10V rms
    Output impedance: 330 ohms.
    Suitable for headphones of 8 ohm to 2k ohm impedance.
    Loudspeakers
    Nominal output level 40W per channel. Suitable for speakers of 4 ohm or higher nominal impedance.

    Power supply
    240V nominal 230VA, may be dealer adjusted to 220V and 120V nominal.
    (100V model to special order)

  • Net weight (2.2 lb = 1 kg)
  • 4 kg / 8 lb 13 oz (8.811 lb)
  • Price in first year of sale
  • 199.95 £
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Alpha 3 Amplifier Handbook Issue 2 10/91)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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