Marantz 2250B

Data

General

  • Manufacturer: Marantz
  • Model: 2250 B
  • Type: Receiver
  • Years of manufacture: 1976 - 1977
  • Made in: Japan
  • Color: Black or silver
  • Remote control: no
  • Power consumption: 330 W
  • Dimensions: 440 x 137 x 365 mm (WxHxD)
  • Weight: 15.4 kg
  • New price approx.: 550 $, corresponds to about 1'800 DM


Connections

  • Number of inputs:
    • Tape In, Aux: 180 mV / 100 kOhm

Phono: 1.8 mV / 47 kOhm

    • Antenna FM (75/300 Ohm) / MW
    • Dubbing in
    • Main In: 1 V / 75 kOhm
  • Number of outputs:
    • Tape Out: 200 Ohm

FM Quadradial

    • Dubbing out

Pre Out: 900 Ohm

    • Headphones (6.3 mm jack, front)
    • 2 pairs of speakers


Technical Data

Amplifier

  • Continuous power (at distortion):
    • 8 Ohm: 2x 50 W
    • 4 Ohm:
  • Dynamic power:
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: 0.25%
  • Attenuation factor: 55 (8 Ohm, 1 kHz)
  • Frequency response:
    • 20 - 20,000 Hz (±0.2 dB).
    • Phono: RIAA ±1 dB
  • Signal-to-noise ratio:
  • Stereo channel separation:
  • Tone control: (each L/R separate)

Bass: ±12 dB (50 Hz), Turnover: 250 / 500 Hz

    • Mid: ±6 dB (700 Hz)

Treble: ±12 dB (15 kHz), Turnover: 2 / 4 kHz

  • Loudness: yes
  • High Filter: yes
  • Low Filter (Subsonic): yes
  • Mute: no
  • Direct/Line-Straight: yes


Tuner

  • Reception: FM/MW
  • Frequencies:
    • FM: 87.5 - 108 Mhz
    • MW: 540 - 1,605 kHz
  • Frequency response: 30 - 15,000 Hz (±1.5 dB, stereo)
  • Input sensitivity:
    • FM: 1.9 µV

MW: 20 µV Distortion factor: (1000 µV, 65.2 dBf, 1 kHz)

    • FM: 0.3% (mono), 0.4% (stereo)
  • Signal-to-noise ratio:
    • FM: 70 dB (mono), 60 dB (stereo)
  • Channel separation:
    • FM: 40 dB (at 1 kHz).
  • Selectivity:
  • Common wave selection: (1000 µV, 65.2 dBf).

FM: 1.5 dB

  • Spurious wave selection:
    • FM: 65 dB
  • Image frequency attenuation:
    • VHF: 70 dB
  • IF attenuation:
    • FM: 100 dB
  • AM suppression: 60 dB
  • Output level:
  • RDS: no
  • Station memory: no
  • Multipath: yes
  • Hi Blend: yes


Special Features

  • Pre- and power stage separable (Main In/Pre Out)
  • Dolby FM decoding


Remarks


Pictures

  • Image: Marantz 2250 B

Marantz 2250 B-1.jpg


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