Quad Power Amplifier 606 Mk I (1)

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

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  • Year
  • 1986 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 317659

 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; 110-120; 220-240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 280 W (440 W max.)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Quad Power Amplifier 606 [Mk I ] - Quad Brand; Acoustical
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 321 x 140 x 238 mm / 12.6 x 5.5 x 9.4 inch
  • Notes

  •  A stereo hi-fi power amplifier in the Quad 66 Series of hi-fi separates. RCA phono input sockets, terminals for one pair of loudspeakers, unswitched AC outlet, current overload trip reset button.

    Specification  
    Power output
    per channel:    		 140W into 8Ω, 12A peak.
    220W into 4Ω, 12A peak.
    Distortion (Dtot): <0.01% at 20 Hz any level up to 130W.
    <0.01% at 1 kHz any level up to 130W.
    <0.03% at 20 kHz any level up to 130W.
    (Continuous sine wave into 8Ω resistive load)
    Output, internal Impedance
    and DC offset:    		 1.5 µH in series with 0.05Ω.
    DC offset typically 7 mV.
    Frequency response: -0.25 dB at 20 Hz and 20 kHz, ref 1 kHz.
    -1.0 dB at 13 Hz and 40 kHz, ref 1 kHz.
    Power response: -0.25 dB at 20 Hz and 20 kHz, ref 1 kHz.
    Input sensitivity: 500 mV for 140W into 8Ω.
    Input Impedance: 20 kΩ.
    Input overload: Instantaneous recovery up to +15 dB overload.
    Crosstalk:
    (input loaded by 1 kΩ)    		 -100 dB at 100 Hz.
    -85 dB at 1 kHz.
    -65 dB at 10 kHz.
    Hum and noise: Unweighted -105dB ref 140W
    (15.7 kHz measurement bandwidth)
    Stability: Unconditionally stable with any load and input.

    Power requirements
    110V-120V, 220V-240V, or 100V AC (Requires changing two links on power board)
                         or changing the mains transformer, current trip and F1 AC power fuse).

    Power consumption:      35-750W depending on output power level.

    The Quad 606 Power Amplifier Mk II was released later with chassis changes and a case with bevelled edges rather than straight edges.

  • Net weight (2.2 lb = 1 kg)
  • 12 kg / 26 lb 6.9 oz (26.432 lb)
  • Price in first year of sale
  • 449.00 £
  • Mentioned in
  • Gramophone magazine Oct 1986 Quad 606 review
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Quad 606 Power Amplifier Instruction Book)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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