Digital Monitoring Amplifier PM-84

Marantz (Sound United LLC); Vista, CA

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  • Year
  • 1985
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 314206

 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; 120; 220; 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 240 W (280 W max.)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Digital Monitoring Amplifier PM-84 - Marantz Sound United LLC;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 416 x 146 x 410 mm / 16.4 x 5.7 x 16.1 inch
  • Notes

  • A high power integrated stereo amplifier with flexible and comprehensive input/output options with a Direct switch which allows direct connection of sources to the power amp via only the volume control. Housed in a champagne gold or black metal case with output power of 120 watts RMS per channel into 8 ohms or 140 watts RMS per channel into 4 ohms. With a jack for headphones, RCA phono sockets for Phono1 (MM or MC), Phono2 (MM), CD, Tuner, Aux,  for input/output Tape1, Tape2, terminals for 2 pairs of loudspeakers.

    Features
    - Quarter A and AVSS technologies offer high dynamic power coupled with pure Class A sound (up to 25 watts).
    - FET phono section for low noise, low distortion and low colouration - gold-plated connectors. (Frequency response to IEC spec.)
    - Moving coil input offers two sensitivities.
    - Copper-plated chassis reduces distortion from electro-magnetic coupling in metalwork.
    - Two tape monitoring circuits with Record Output Selector to listen to one source while recording another.
    - Switchable audio muting and subsonic filtering.
    - Relay controlled speaker switching between two pairs of speakers - substantial binding posts.

    Specification  
    Audio Section  
    Power Output Per Channel (20 Hz - 20 kHz)  
     Into 8Ω 120W (RMS), 130W (DIN)
     Into 4Ω 140W (RMS), 180W (DIN)
    THD at RMS 8Ω 0.015%
    IM Distortion 0.015%
    Damping Factor 8Ω (1 kHz) 90
    MM Cartridge Input  
    Frequency Response (RIAA) ±0.2 dB
    Signal-to-Noise Ratio (A weighted) 92 dB
    Input Impedance 47kΩ
    Input Sensitivity 2.5mV
    Equivalent Input Noise 0.07µV
    MC Cartridge Input  
    Input Sensitivity 250µV
    Input Impedance MC  (High MC) 1kΩ (MC) 100Ω
    Signal-to-Noise Ratio (A weighted) 80 dB
    AUX. Input  
    Input Impedance 25 kΩ
    Input Sensitivity 150 mV
    Frequency Response (Direct Position) 5Hz-45kHz ±1 dB
    Signal-to-Noise Ratio 98dB (A weighted)
    Output Voltage  
    Tape Out  (PHONO (MM) 7.75 mV 1kHz Input 520mV
    Output Impedance  
    Tape Out  (PHONO)  490Ω

    Versions/Power Requirements
    USA (U) , Australia (A), Europe (N), PX (P)  / 110/120/220/240V AC 50/60 Hz                                                      with voltage selector

    Power consumption:  500 watts

    Produced in Japan.

  • Net weight (2.2 lb = 1 kg)
  • 18 kg / 39 lb 10.4 oz (39.648 lb)
  • Mentioned in
  • - - Manufacturers Literature (1985-86 Marantz Hi-Fi catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service Manual PM-84 Stereo Pre Main Amplifier)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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