Marantz 4270

Data

General

• Manufacturer: Marantz
• Model: 4270
• Type: Quadrophonic Receiver
• Years of manufacture: 1973 - 1978
• Manufactured in: Japan
• Color: Silver / Brown
• Remote control: RC4 Remote Control
• Power consumption: 400 W max. idle 45 W
• Dimensions: 441 x 137 x 400 mm (WxHxD)
• Weight: 18.2 kg
• Original price approx.: 1'998 DM

Connections

• Number of inputs:
  • Phono: 2.2 mV / 47 kOhm

Aux: 150 mV / 100 kOhm

• • Tape Play 1, 2: 150 mV / 100 kOhm
  • Main In:
• Number of Outputs:
  • Tape Rec 1, 2: 1 V / 47 kOhm
  • Pre-Out: 1 V, 900 Ohm
  • Headphones 1, 2: (6,3mm jack)
  • 4 speaker pairs

Technical Data

Audio

• Output power (at harmonic distortion)

Stereo: 2x 70 W / 0.3 % Quadrophony: 4x 40 W / 0.3 %

• Attenuation factor: 45
• Frequency response: 7 - 70'000Hz
• Signal-to-noise ratio:
• Stereo channel separation:
• Tone control:
  • Bass: ±10dB at 50Hz

Mids: ±10dB at 700Hz Treble: ±10dB at 15kHz

• Loudness: 7dB at 100Hz, 4dB at 10kHz
• High Filter: 10kHz, 6dB per octave
• Low Filter: 100Hz, 6dB per octave
• Mute: -

Sound Formats

• Dolby
• DolbyFM

Tuner

• Reception: FM, MW
• Frequencies:
  • FM: 88 - 108 MHz

MW: 540 - 1602 kHz

• Frequency response: 30 Hz - 15 kHz, ± 1 dB
• Input sensitivity: 2.2 µV
• Distortion factor: 0.4 % (stereo), 0.3 % (mono)
• Signal-to-noise ratio: > 90 dB
• Channel separation: greater than 40 dB
• selectivity: > 60 dB
• Co-wave selection: 70 dB
• Spurious wave selection: 90 dB
• Image frequency attenuation: 90 dB
• IF attenuation: 100 dB
• AM suppression: 50 dB

Special Features

• Built-in Dolby system
• Quadradial Output
• 2x headphone jack for four channel

Notes

• Other models in the same series:
• Marantz 4025
• Marantz 4220
• Marantz 4230
• Marantz 4240
• Marantz 4270
• Marantz 4400
• Marantz 4415
• Marantz 4420
• Marantz 4430

Pictures

• Image: Marantz 4270