Kenwood KR-8840

Data

General

  • Manufacturer: Kenwood
  • Model: KR-8840 (European model Kenwood KR-8340)
  • Years of manufacture: 1973 - 1975
  • Made in: Japan
  • Color: Silver
  • Remote control: no
  • Power consumption: 560 W at full level
  • Dimensions (WxHxD): 534 x 162 x 360 mm
  • Weight: 18.7 kg
  • Original price approx.: 800 US-$, 3'200 DM


Connections

  • Number of inputs:
    • Phono 1: 1.5 mV / 150 kOhm (max. 100 mV).
    • Phono 2 with CD-4: 1.5 mV / 150 kOhm
    • Microphone: 2 mV / 15 kOhm
    • AUX: 150 mV / 150 kOhm
    • Tape Play 1 & 2:
      • Cinch: 150 mV / 150 kOhm
      • DIN: 150 mV / 150 kOhm
    • Antenna FM (75 Ohm Unbalanced / 300 Ohm Balanced), AM
  • Number of outputs:
    • Tape Rec 1 & 2:
      • Cinch: 150 mV / 100 Ohm

DIN: 40 mV / 50 Ohm

    • Headphones Front / Rear: 2 x 6.3 mm jack plug
    • 2 pairs each of front and rear speakers


Technical Data Tuner Part

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

MW: 525 - 1605 kHz

  • Frequency response: 20 - 15,000 Hz (± 1.2 dB, FM)
  • Input sensitivity:
    • FM: 1.9 µV (IHF)

MW: 19 µV Distortion factor:

    • FM: 0.5% (mono), 0.8% (stereo).
  • Signal-to-noise ratio:
    • FM: 63 dB (stereo)

MW: 45 dB

  • Channel separation:
    • FM: 40 dB (at 1 kHz)
  • Selectivity: (IHF)
    • FM: 50 dB
    • MW: 45 dB
  • Equal wave selection:
    • FM: 3.0 dB
  • Spurious wave selection:
    • FM: 45 dB
  • Image frequency attenuation:
    • FM: 60 dB
    • MW: 45 dB

IF attenuation:

    • FM: 90 dB
  • AM suppression: 60 dB


Technical Data Amplifier Part

  • Continuous power Quadro operation:
    • 8 Ohm: 4 x 25 W (1 kHz)

4 Ohm:

  • Dynamic power
    • 8 Ohm: 200 W
    • 4 Ohm:
  • Continuous power stereo operation:
    • 8 Ohm: 2 x 60 W (1 kHz)

4 Ohm:

  • dynamic power
    • 8 Ohm: 160 W
    • 4 Ohm:
  • Total harmonic distortion: 0.8% (at rated power)
  • Attenuation factor: 30 (8 Ohm)
  • Frequency response:
    • Preamplifier: 20 - 40,000 Hz ± 1 dB)
    • Power bandwidth: 10 - 45,000 Hz
  • Signal-to-noise ratio:
    • Phono 1,2: 60 dB
    • Microphone: 60 dB
    • AUX, Tape: 75 dB
  • Tone control:
    • Bass: ± 10 dB at 100 Hz

Treble: ± 10 dB at 10 kHz

  • Loudness: + 10 / + 5 dB (100 Hz / 10 kHz)
  • Low Filter (Subsonic): - 8 dB at 100 Hz
  • High Filter: - 6 dB at 10 kHz
  • Mute: FM Muting


Special Features

  • 4 VU meters
  • Toggle switch for VU meter: + 20 dB
  • Switch for 4-channel RM, SQ, Discrete / Stereo / Mono
  • Input for CD-4 demodulator insert for KCD-2
  • Bass and treble control separately for front / rear


Remarks




Pictures

  • Kenwood KR-8840 Front

Kenwood KR-8840-1.jpg


Reports

  • Report at "Hifi Museum" [=quadro]


Links

  • External link: KR-7340 "The Vintage Knob" website: [1]