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

• Other models in the same series:
  • Kenwood KR-5340
  • Kenwood KR-6140
  • Kenwood KR-6140 A
  • Kenwood KR-6340
  • Kenwood KR-7340
  • Kenwood KR-8040
  • Kenwood KR-8140
  • Kenwood KR-8340
  • Kenwood KR-9040
  • Kenwood KR-9340

• • [[Kenwood CD-4 demodulator plug-in unit KCD-2
  • Kenwood KCD-2

• Introduction to Kenwood 4-channel playback technology.
  • Introduction Kenwood 4-channel playback technology

Pictures

• Kenwood KR-8840 Front

Reports

• Report at "Hifi Museum" [=quadro]

Links

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