Editing Kenwood KR-4070

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__NOTOC__
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Kennwood KR-4070
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== Data ==
 
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{{navigation}}
 
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'''General'''
 
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* Manufacturer: [[Kenwood]]
 
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* Model: KR-4070 (KR-4770)
 
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Type: Receiver
 
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* Years of manufacture: 1978 - 1980
 
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* Made in: Japan
 
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* Color: Silver (KR-4770: Anthracite metallic)
 
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* Remote control: no
 
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* Power consumption: 300 W
 
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* Dimensions: 468 x 149 x 392 mm (WxHxD)
 
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* Weight: 9,4 kg
 
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* Original price approx.: 898 DM (1978)
 
  
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Technische Daten:
  
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'''Connections'''
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UKW-Empfangsteil:
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* Number of inputs:
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Mono (75 kHz Hub, 26 dB S/N, an 75 Ohm): 1,2 µV
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** Phono MM (Cinch): 2.5 mV / 50 kOhm.
 
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1x Tape In (Cinch/DIN): 150 mV / 45 kOhm
 
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** Aux (Cinch): 150 mV / 45 kOhm
 
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** Antenna FM (75/300 Ohm), AM
 
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* Number of outputs:
 
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** 1x Tape Out (Cinch/DIN):
 
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** Headphones (6.3 mm jack, front)
 
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** 2 pairs of loudspeakers
 
  
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Stereo (75 kHz Hub, 46 dB S/N, an 75 Ohm): 45 µV
  
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'''Technical Data'''
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Rauschsignalabstand 50dB: 3,0 µV
  
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''Amplifier''
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Begrenzereinsatz: 1,0 µV
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* Continuous power
 
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** 8 Ohm: 2x 40 W (20-20,000 Hz)
 
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** 4 Ohm:
 
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* Dynamic power
 
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** 8 Ohm:
 
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** 4 Ohm:
 
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* Total harmonic distortion: 0.05% (at rated power)
 
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* Attenuation Factor:
 
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* Frequency Response:
 
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** Power bandwidth: 10 - 40,000 Hz
 
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* Signal-to-noise ratio: (IHF-A)
 
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** Phono MM: 73 dB
 
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** AUX, Tape: 95 dB
 
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* Stereo Channel Separation:
 
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* Tone control:
 
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** Bass: ±8 dB at 100 Hz
 
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Treble: ±8 dB at 10 kHz
 
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* Loudness: +9 dB (100 Hz)
 
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* High Filter: no
 
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* Low Filter (Subsonic): no
 
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* Mute: FM Muting
 
  
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Frequenzgang: 20 Hz – 15 kHz
  
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''Tuner''
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Klirrfaktor
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* Reception: FM, MW
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Mono, 1 kHz (40 kHz dev, 1 mV input): 0,15 %
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* Frequencies:
 
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** FM: 87.5 - 108 MHz
 
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MW: 525 - 1605 kHz
 
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* Frequency response: 20 - 15,000 Hz
 
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* Input sensitivity:
 
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** FM: 1.2 µV (IHF)
 
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MW: 16 µV
 
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* Distortion factor: (1 kHz)
 
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** FM: 0.15% (mono), 0.3% (stereo)
 
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* Signal-to-noise ratio: (IHF-A)
 
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VHF: 72 dB (mono), 67 dB (stereo)
 
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MW: 50 dB
 
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* Channel separation:
 
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** FM: 40 dB (at 1 kHz).
 
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* Selectivity:
 
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** FM: 60 dB
 
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* Equal wave selection:
 
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** FM: 1.0 dB
 
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* Spurious wave selection:
 
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** FM: 75 dB
 
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* Image frequency attenuation:
 
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** FM: 45 dB
 
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** MW: 50 dB
 
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IF attenuation:
 
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** FM: 95 dB
 
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* AM suppression: 53 dB
 
  
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Stereo, 1 kHz (46 kHz dev, 1 mV input): 0,3 %
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Stör/Nutzsignalabstand (bew.):
  
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== Comments ==
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Mono /IHF-A, 1 mV): 72 dB
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* Other models in the same series:
 
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* [[Kenwood KR-2090]]
 
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* [[Kenwood KR-3090]]
 
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* [[Kenwood KR-4070]]
 
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* [[Kenwood KR-5030]]
 
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* [[Kenwood KR-6030]]
 
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* [[Kenwood KR-8010]]
 
  
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(DIN-B, 46 kHz dev, 1 mV): 70 dB
  
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== Pictures ==
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Stereo (IHF-A, 1mV): 67 dB
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* Image: Kenwood KR-4070
 
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[[File:Kenwood KR-4070-1.jpg|1600px]]
 
  
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(DIN-B, 40 kHz dev, 1 mV): 64 dB
  
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* Picture: Kenwood KR-4770
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Spiegelfrequenzunterdrückung: 45 dB
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[[File:Kenwood KR-4770-1.jpg|1600px]]
 
  
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Selektivität: 60 dB (300 kHz)
  
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== Reviews ==
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ZF-Unterdrückung: 95 dB
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* Review by "Good Old Hifi": [[http://www.good-old-hifi.de/kenwood_kr-4070_und_weitere_geraete/]]
 
  
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AM-Unterdrückung: 53 dB
  
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== Links ==
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Nebenwellenunterdrückung: 75 dB
  
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Stereokanaltrennung:
  
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[[Category:Receiver]]
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(1 kHz, 46 kHz dev, 1 mV): 40 dB
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Gleichwellenunterdrückung: 1,0 dB
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Mittelwellen-Empfangsteil:
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Eingangsempfindlichkeit: 16 µV
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Stör/Nutzsignalabstand: 50 dB
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Spiegelfrequenzunterdrückung: 50 dB
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Stereo-Verstärkerteil:
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Max. Ausgangsleistung, beide Kanäle in Betrieb bei DIN: 2 x 64 W
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Nennausgangsleistung/Sinusleistung (8 Ohm, 20 – 20 kHz): 2 x 40 W
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Klirrfaktor bei Nennleistung: 0,05%
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Intermodulationsverzerrungen bei Nennleistung: 0,1 %
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Leistungsbandbreite: 10 Hz - 40 kHz
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Eingangsempf. und Impedanz (IHF-A)
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Phono 1: 2,5 mV/59 kOhm
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Aux: 150 mV/45 kOhm
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Tape: 150 mV/45 kOhm
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Geräuschspannungsabstand (IHF-A)
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Phono 1: 73 dB
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Aux: 95 dB
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Tape: 95dB
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Phone (50mW): 60 dB
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Aux (50mW): 60 dB
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Regelbereiche:
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Bass (100 Hz): +/- 8 dB
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Treble (10 kHz): +/- 8 dB
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Loudness (-30 dB) 100 Hz: + 9 dB
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Allgemeines:
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Netzanschluß: 110/220/240 V, 50-60 Hz
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Max. Leistungsaufnahme: 300 W
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Abmessungen (BxHxT): 468 x 149 x 360 mm
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Gewicht: 9,4 Kg

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