Stereophonic Receiver 2220B

Marantz (Sound United LLC); Vista, CA

Data
Forum
Pictures
Collections

  • Year
  • 1975–1977 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 280177

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Main principle
  • Superheterodyne (common); ZF/IF 455/10700 kHz
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • 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
  • 40 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereophonic Receiver 2220B - Marantz Sound United LLC;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 17.375 x 5.375 x 14 inch / 441 x 137 x 356 mm
  • Notes

  • A hi-fi stereo receiver with an AM/FM stereo tuner with analogue dial and an integrated amplifier with power output of 2 x 20 watts RMS into 4 ohms or 8 ohms, housed in a metal case (wooden case optional). With an AM/FM Tuning meter, Gyro Touch tuning, rotary controls for Bass, Mid, Treble and Volume, slider Balance control, rotary Selector switch (AM, FM, Phono, Tape2, Aux), push button switches for Tape1 Monitor, Mono, Low Filter (not on US model), Hi Filter, Loudness, FM Muting, Speakers Main and Remote,  jack for headphones and on the US model, a 25µS Dolby FM switch. On the back, an AM ferrite rod antenna, terminals for AM and FM antennae, RCA phono sockets for input phono (MM) and Aux, for input/output for 2 Tapes and for FM Quadradial output, terminals for 2 pairs of loudspeakers, switched and unswitched AC outlets.

    Specification  
    Audio Section  
    Rated Power Output (Continuous Average
    per Channel, All Channels Driven)
    20Hz-20kHz, THD 0.5%    		  
      Into  4Ω
      Into  8Ω
      Into 16Ω    		 20 Watts
    20 Watts
    10 Watts
    Dynamic range
    (phono input to tape recording output)    		 96dB
    IM Distortion (SMPTE), at rated power 0.9%
    Total Harmonic Distortion, at rated power 0.5% Max.
    Power Bandwidth (IHF) for 0.5% THD 10Hz-50kHz
    Damping Factor (8Ω) > 20
    Frequency Response through phono 2.0dB
    Input Sensitivity (for 15W at 8Ω)  
      Line
      Phono (1kHz)    		 180mV
    1.8mV
    Input Impedance  
      Line
      Phono    		 100kΩ
    47kΩ
    Channel Separation 20Hz-10kHz 30dB Min.
    FM Section  
    IHF Usable Sensitivity 2.5µV
    Selectivity 50dB
    Noise Quieting  -70 dB at 1.000µV
    THD, 400 Hz, 100% Mod 0.3% Max.
    Frequency Response 50Hz-15KHz ±1dB
    Stereo Separation 1kHz 40dB
    Sub Carrier (38kHz) Suppression 60dB
    AM Section  
    Sensitivity 25µV

    Versions/Power requirements
    120V AC 50/60Hz (US model)
    110/120/220/240V AC 50/60Hz switchable internally

    Power consumption: 130 watts

    See also the Marantz 2220BL Stereophonic Receiver which additionally has LW and also similar to the earlier Marantz 2220 Stereophonic Receiver.

    Designed in USA, Produced in Japan.

  • Net weight (2.2 lb = 1 kg)
  • 23 lb 0 oz (23 lb) / 10.442 kg
  • Literature/Schematics (2)
  • -- Original-techn. papers.
  • Literature/Schematics (3)
  • - - Manufacturers Literature (Service Manual Marantz 2220B)
  • Literature/Schematics (4)
  • - - Manufacturers Literature (Handbook of Instructions Marantz 2220B)
  • Author
  • Model page created by Frank Annweiler. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Stereophonic Receiver is part of the collections of the following members.

 Forum

Forum contributions about this model: Marantz Sound United: Stereophonic Receiver 2220B

Threads: 1 | Posts: 1

Zum diesem Marantz-Modell 2220B ist im Internet leicht das Marantz-ServiceManual zu finden. Leider hat dieses Fehler:

Schaltplan:

Beim Ladekondensator C004 ist die Polung falsch herum angegeben. Das + Symbol muss unten sein.

Abgleichanweisung:

12. Power Supply Adjustment:

Für den Abgleich des Ruhestroms der Endstufen ist hier angegeben mit einem Voltmeter zwischen J712(+) und J718(-) zu messen und mit R733 auf 20mV einzustellen. Für den anderen Kanal soll gleiches zwischen J713(+) und J719(-) gemessen werden und mit R734 eingestellt werden.

Stattdessen ist folgendes Vorgehen richtig:

Zwischen J714(+) und J716(-) messen und mit R733 20mV einstellen. Für den anderen Kanal zwischen J715(+) und J717(-) messen und mit R734 20mV einstellen.

Der beim Abgleich des virtuellen Nullpunktes kann der Abgleichanweisung gefolgt werden.

Frank Annweiler, 06.Apr.16

Weitere Posts (1) zu diesem Thema.