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

• Other models in the same series:
• Kenwood KR-2090
• Kenwood KR-3090
• Kenwood KR-4070
• Kenwood KR-5030
• Kenwood KR-6030
• Kenwood KR-8010

Pictures

• Image: Kenwood KR-4070

• Picture: Kenwood KR-4770

Reviews

• Review by "Good Old Hifi": [[1]]