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

• Other models in the same series:
• Marantz 2235
• Marantz 2250B
• Marantz 2275
• Marantz 2325

Pictures

• Image: Marantz 2250 B