Kenwood KR-4070

Data

General

  • Manufacturer: Kenwood
  • Model: KR-4070 (KR-4770)

Type: Receiver

  • Years of manufacture: 1978 - 1980
  • Made in: Japan
  • Color: Silver (KR-4770: Anthracite metallic)
  • Remote control: no
  • Power consumption: 300 W
  • Dimensions: 468 x 149 x 392 mm (WxHxD)
  • Weight: 9,4 kg
  • Original price approx.: 898 DM (1978)


Connections

  • Number of inputs:
    • Phono MM (Cinch): 2.5 mV / 50 kOhm.

1x Tape In (Cinch/DIN): 150 mV / 45 kOhm

    • Aux (Cinch): 150 mV / 45 kOhm
    • Antenna FM (75/300 Ohm), AM
  • Number of outputs:
    • 1x Tape Out (Cinch/DIN):
    • Headphones (6.3 mm jack, front)
    • 2 pairs of loudspeakers


Technical Data

Amplifier

  • Continuous power
    • 8 Ohm: 2x 40 W (20-20,000 Hz)
    • 4 Ohm:
  • Dynamic power
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: 0.05% (at rated power)
  • Attenuation Factor:
  • Frequency Response:
    • Power bandwidth: 10 - 40,000 Hz
  • Signal-to-noise ratio: (IHF-A)
    • Phono MM: 73 dB
    • AUX, Tape: 95 dB
  • Stereo Channel Separation:
  • Tone control:
    • Bass: ±8 dB at 100 Hz

Treble: ±8 dB at 10 kHz

  • Loudness: +9 dB (100 Hz)
  • High Filter: no
  • Low Filter (Subsonic): no
  • Mute: FM Muting


Tuner

  • Reception: FM, MW
  • Frequencies:
    • FM: 87.5 - 108 MHz

MW: 525 - 1605 kHz

  • Frequency response: 20 - 15,000 Hz
  • Input sensitivity:
    • FM: 1.2 µV (IHF)

MW: 16 µV

  • Distortion factor: (1 kHz)
    • FM: 0.15% (mono), 0.3% (stereo)
  • Signal-to-noise ratio: (IHF-A)

VHF: 72 dB (mono), 67 dB (stereo) MW: 50 dB

  • Channel separation:
    • FM: 40 dB (at 1 kHz).
  • Selectivity:
    • FM: 60 dB
  • Equal wave selection:
    • FM: 1.0 dB
  • Spurious wave selection:
    • FM: 75 dB
  • Image frequency attenuation:
    • FM: 45 dB
    • MW: 50 dB

IF attenuation:

    • FM: 95 dB
  • AM suppression: 53 dB


Comments


Pictures

  • Image: Kenwood KR-4070

Kenwood KR-4070-1.jpg


  • Picture: Kenwood KR-4770

Kenwood KR-4770-1.jpg


Reviews

  • Review by "Good Old Hifi": [[1]]


Links