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Stereophonic Receiver 2270

Stereophonic Receiver 2270; Marantz Sound United (ID = 2030270) Radio
Stereophonic Receiver 2270; Marantz Sound United (ID = 2058162) Radio Stereophonic Receiver 2270; Marantz Sound United (ID = 2058166) Radio
Stereophonic Receiver 2270; Marantz Sound United (ID = 2058167) Radio Stereophonic Receiver 2270; Marantz Sound United (ID = 2058163) Radio
Stereophonic Receiver 2270; Marantz Sound United (ID = 2058164) Radio Stereophonic Receiver 2270; Marantz Sound United (ID = 430455) Radio
Stereophonic Receiver 2270; Marantz Sound United (ID = 430456) Radio Stereophonic Receiver 2270; Marantz Sound United (ID = 496313) Radio
Stereophonic Receiver 2270; Marantz Sound United (ID = 2058161) Radio
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Stereophonic Receiver 2270; Marantz Sound United (ID = 2058162) Radio
Marantz Sound United: Stereophonic Receiver 2270 [Radio] ID = 2058162 1398x577
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For model Stereophonic Receiver 2270, Marantz (Sound United LLC); Vista, CA
 
Country:  United States of America (USA)
Manufacturer / Brand:  Marantz (Sound United LLC); Vista, CA
Year: 1972–1975 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 140 W (210 W max.)
from Radiomuseum.org Model: Stereophonic Receiver 2270 - Marantz Sound United LLC;
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 17.328 x 5.39 x 14 inch / 440 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 70 watts RMS into 8 ohms, housed in a metal cabinet (a WC-22 walnut cabinet optional). The preamplifier and power amplifier sections can be separated.  With Signal Strength and FM Tuning meters, jacks for headphones and Dubbing, Gyro Touch tuning, Bass, Mid and treble tone controls, Hi Blend, Low & Hi Filters, Loudness, Mono, Muting, Main & Remote Speakers. On the back, an AM ferrite rod antenna, AM and FM antennae terminals, RCA phono sockets for input phono1 and 2 (MM) and Aux, for input/output for 2 Tapes, for FM Quadradial output, Main In/Pre Out, terminals for 2 pairs of loudspeakers, switched and unswitched AC outlets.

Specification 
Audio Section 
Rated continuous (RMS) power output
per channel, both channels driven
 
 Into 4Ω and 8Ω
 Into 16Ω
70 W
40 W
Comparable Total Music Power (IHF)210 W into 8Ω
Dynamic range96dB
IM Distortion (SMPTE), at rated power0.3%
Total Harmonic Distortion, at rated power0.3% Max.
Power Bandwidth (IHF) for 0.3% THD7Hz-50kHz
Damping Factor (ref. 8Ω)> 45
Frequency Response through phono±1dB
Input Sensitivity (for 40W at 8Ω) 
 High-level
 Phono (1kHz)
180mV
1.8mV
Input Impedance 
 High-level
 Phono
100kΩ
47kΩ
Channel Separation 20Hz-20kHz35dB Min.
FM Section 
IHF Usable Sensitivity2.3µV
Selectivity80dB
Total Harmonic Distortion, 400Hz, 100% Mod.0.2% (Mono), 0.4% (Stereo)
Frequency Response50Hz-15kHz ±1dB
Stereo Separation 1kHz40dB
AM Section 
IHF Sensitivity25µV

Versions/Power requirements
110/120/220/240V AC 50/60Hz switchable internally

Power consumption: 500 W

Das Spitzenmodell der für das Modelljahr 1972 vorgestellten 22xx Serie. Dieses Gerät wurde mit kleinen Änderungen bis 1975 gebaut. Es gab gravierte oder bedruckte, alu- oder champagnerfarbene ("gold-anodized") Frontblenden. Die Ausgangsleistung des 2270 wurde vom Hersteller, sehr konservativ, mit 2 x 70 Watt Dauerleistung bzw 2 x 105 Watt Musikleistung, nach RMS (20-20.000Hz) an 8 Ohm angegeben. Ein zeitgenössischer Test der HiFi Stereofonie vom Juli 1973 ergab eine Dauerleistung von  2 x 90 Watt an 8 Ohm. An 4 Ohm wurden, mit einem Klirrfaktor von unter 1%, 2 x 140 Watt gemessen.

3-fache, kanalgetrennte, Klangregelung, Vor und Endstufe auftrennbar, Mittenanzeige, Feldstärkeanzeige umschaltbar als Reflexionsanzeige ("Multipath") zur Einstellung einer motorbetriebenen Außenantenne. Leistungsaufnahme 500 Watt.

Designed in USA, Produced in Japan

Net weight (2.2 lb = 1 kg) 38.5 lb (38 lb 8 oz) / 17.479 kg
Price in first year of sale 2'895.00 DM
Mentioned in -- Original prospect or advert (HiFi Jahrbuch 7 (1972), Bedienungsanleitung)
Literature/Schematics (1) -- Original prospect or advert (1972 Marantz Stereo Receivers catalogue)
Literature/Schematics (2) - - Manufacturers Literature (Service manual Marantz 2270)
Literature/Schematics (3) - - Manufacturers Literature (Handbook of Instructions Marantz 2270)

Model page created by Ralf Kläs. See "Data change" for further contributors.



All listed radios etc. from Marantz (Sound United LLC); Vista, CA
Here you find 539 models, 530 with images and 84 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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