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Stereophonic Receiver 2220B

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Stereophonic Receiver 2220B; Marantz; Itasca (ID = 1974399) Radio
Marantz; Itasca: Stereophonic Receiver 2220B [Radio] ID = 1974399 1400x560
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For model Stereophonic Receiver 2220B, Marantz; Itasca:
Front
 
Country:  United States of America (USA)
Manufacturer / Brand:  Marantz; Itasca
Year: 1975–1977 ? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for 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)
from Radiomuseum.org Model: Stereophonic Receiver 2220B - Marantz; Itasca
Material Metal case
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 power0.9%
Total Harmonic Distortion, at rated power0.5% Max.
Power Bandwidth (IHF) for 0.5% THD10Hz-50kHz
Damping Factor (8Ω)> 20
Frequency Response through phono2.0dB
Input Sensitivity (for 15W at 8Ω) 
  Line
  Phono (1kHz)
180mV
1.8mV
Input Impedance 
  Line
  Phono
100kΩ
47kΩ
Channel Separation 20Hz-10kHz30dB Min.
FM Section 
IHF Usable Sensitivity2.5µV
Selectivity50dB
Noise Quieting -70 dB at 1.000µV
THD, 400 Hz, 100% Mod0.3% Max.
Frequency Response50Hz-15KHz ±1dB
Stereo Separation 1kHz40dB
Sub Carrier (38kHz) Suppression60dB
AM Section 
Sensitivity25µV

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 (1) Photofact Folder, Howard W. SAMS (SAMS # MHF-91)
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)

Model page created by Frank Annweiler. See "Data change" for further contributors.



All listed radios etc. from Marantz; Itasca
Here you find 529 models, 522 with images and 80 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
Marantz; Itasca: Stereophonic Receiver 2220B
Threads: 1 | Posts: 1
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marantz: Falsche Angaben im ServiceManual
Frank Annweiler
06.Apr.16
  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.

 
Marantz; Itasca: Stereophonic Receiver 2220B
End of forum contributions about this model

  
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