405-2

Quad (Brand); Acoustical Manufacturing Co. Ltd.; Huntingdon

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  • Year
  • 1983
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 312131

 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) / 110 or 120 or 130 or 220 or 230 or 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 200 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 405-2 - Quad Brand; Acoustical
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 340.5 x 115 x 195 mm / 13.4 x 4.5 x 7.7 inch
  • Notes

  • A stereo power amplifier with output power of 2 x 100 watts into 8 ohms. "Current Dumping" design.  The amplifier is intended for use with loudspeakers of 4-16 ohm nominal impedance. 4 pin DIN input socket (RCA sockets on late examples), 4mm banana plug sockets for 1 pair of loudspeakers.

    Specification
    Power and distortion for various frequencies.
    Continuous sine wave into 8Ω resistive load.
         100 Hz any level up to 100 watts < 0.01% Distortion
       1000 Hz any level up to 100 watts < 0.01% Distortion
    10,000 Hz any level up to 100 watts < 0.05% Distortion

    Frequency Response
    Ref. 1 kHz
    Low frequency   -1 dB at 20 Hz. Filter attenuation as curve.
    High frequency  -0.5dB 20 kHz -3dB 50 kHz.

    Signal Input Level
     0.5V rms ± 0.5dB for 100 watts into 8Ω.
     Amplifier loads the input by 20kΩ in parallel with 220pF.

    Crosstalk
    (Input loaded by 1kΩ)   80dB @ 100 Hz
                                      70dB @ 1 kHz
                                      60dB @ 10 kHz.

    Hum and Noise
    'A' weighted    -96dB ref full power
    Unweighted    -93dB ref full power (15.7 kHz measurement bandwidth)

    Power Input
    110-120-130, 220-230-240 50/60Hz with voltage selector
    30-350 watts depending on signal level

  • Net weight (2.2 lb = 1 kg)
  • 9 kg / 19 lb 13.2 oz (19.824 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Instruction Book 405-2 Current Dumping Amplifier)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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