Difference between revisions of "Kenwood KA-907"
 
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== Daten ==
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== Data ==
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{{Navigation}}
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{{navigation}}
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'''Allgemein'''
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'''General'''
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* Hersteller: [[Kenwood]]
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* Manufacturer: [[Kenwood]]
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* Modell: KA-907
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* Model: KA-907
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* Baujahre: 1979 - 1980
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* Type: Stereo integrated amplifier
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* Hergestellt in: Japan
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* Years of manufacture: 1979 - 1981
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* Farbe: Silber, Varianten KA-907G in Gold, KA-9077 in Grau-Metallic
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* Made in: Japan
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* Typ: Stereo Vollverstärker
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* Colour: Silver, variants [[Kenwood KA-9077]] in grey metallic, Trio KA-9900 Japan execution
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* Leistungsaufnahme: 1000 W bei voller Leistung
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* Power consumption: 1000 W at full power
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* Abmessungen (BxHxT): 460 x 161 x 463 mm
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* Dimensions (WxHxD): 460 x 161 x 463 mm
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* Gewicht: 25,8 kg
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* Weight: 25,8 kg
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* Neupreis ca.: 2498 DM
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* Original price approx.: 2'798 DM
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* Neupreis D-90 Griffe: 200 DM
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* New price D-90 handles: 200 DM
  
  
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'''Anschlüsse'''
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'''Connections'''
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* Anzahl der Eingänge:
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* Number of inputs:
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** Eingangsempfindlichkeit:  
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** Input sensitivity:  
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** Phono 1 MM: 2.5mV, 33 kOhm, 47 kOhm, 100 kOhm, max. 230mV RMS (1Khz, 0,01% THD)
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** Phono 1 MM: 2.5mV, 33 kOhm, 47 kOhm, 100 kOhm, max 230mV RMS (1Khz, 0.01% THD).
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** Phono 1 MC: 0.1mV, 100 Ohm, max. 9mV RMS (1Khz, 0,01% THD)  
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** Phono 1 MC: 0.1mV, 100 Ohm, max. 9mV RMS (1Khz, 0.01% THD)  
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** Phono 2 MM: 2.5mV, 47 kOhm, 47 kOhm, 100 kOhm, max. 230mV RMS (1Khz, 0,01% THD)
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** Phono 2 MM: 2.5mV, 47 kOhm, 47 kOhm, 100 kOhm, max. 230mV RMS (1Khz, 0.01% THD)
 
** Tuner: 150mV, 50 kOhm
 
** Tuner: 150mV, 50 kOhm
 
** AUX 1,2: 150mV, 50 kOhm
 
** AUX 1,2: 150mV, 50 kOhm
 
** Tape Play A, B: 150mV, 50 kOhm
 
** Tape Play A, B: 150mV, 50 kOhm
 
** Main In: 1V / 50kOhm  
 
** Main In: 1V / 50kOhm  
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* Anzahl der Ausgänge:
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* Number of Outputs:
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** Ausgänge:
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** Outputs:
 
** Tape Rec: 150mV, 180 Ohm  
 
** Tape Rec: 150mV, 180 Ohm  
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** DIN: 30mV / 80 Ohm
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DIN: 30mV / 80 Ohm
 
** Pre Out: 9V max. / 750 Ohm  
 
** Pre Out: 9V max. / 750 Ohm  
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** Kopfhörer
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** Headphones
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** 3 Lautsprecherpaare
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** 2 pairs of speakers
  
  
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'''Technische Daten'''
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'''Technical Data'''
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* Dauerleistung (bei Klirrfaktor)
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* Continuous power (at THD)
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** 8 Ohm: 2x 150W (RMS, 20 Hz - 20 kHz, 0,01% THD), 2x 150W (1Khz)  
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** 8 Ohm: 2x 150W (RMS, 20 Hz - 20 kHz, 0.01% THD), 2x 150W (1Khz)  
 
** 4 Ohm: 2x 180W (1Khz)  
 
** 4 Ohm: 2x 180W (1Khz)  
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* Dynamikleistung
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* Dynamic power
 
** 8 Ohm:   
 
** 8 Ohm:   
 
** 4 Ohm:  
 
** 4 Ohm:  
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* Gesamtklirrfaktor:  
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* Total harmonic distortion:  
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** Phono: 0,01% (Nennleistung, Volume bei -20dB)  
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** Phono: 0.01% (rated power, volume at -20dB).
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** Phono IMD: 0,0045% (Nennleistung, 8 Ohm)  
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** Phono IMD: 0.0045% (nominal power, 8 Ohm)  
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** High Level: 0,01% (Nennleistung, 20Hz - 20kHz, 8 Ohm)  
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High Level: 0.01% (nominal power, 20Hz - 20kHz, 8 Ohm)  
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** High Level: 0,006 % (1/2 Nennleistung, 20Hz - 20Khz, 8 Ohm)  
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** High Level: 0.006% (1/2 nominal power, 20Hz - 20Khz, 8 Ohm)  
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* Dämpfungsfaktor: 100 (DC - 20Khz, 8 Ohm)
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* Attenuation Factor: 100 (DC - 20Khz, 8 Ohm)
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* Frequenzgang:  
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* Frequency Response:  
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** DC - 400 kHz (+0 / -3dB, DC ON)  
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** DC - 400 kHz (+0 / -3dB, DC ON).
 
** 1Hz - 400kHz (+0 / -3dB, DC OFF)  
 
** 1Hz - 400kHz (+0 / -3dB, DC OFF)  
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** 20Hz - 20kHz (RIAA, ±0,2dB)  
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** 20Hz - 20kHz (RIAA, ±0.2dB)  
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* Leistungsbandbreite: 5Hz - 100Khz (0,03% THD), -70dB (DIN 45500)  
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* Power bandwidth: 5Hz - 100Khz (0.03% THD), -70dB (DIN 45500)  
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* Signalrauschabstand:
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* Signal-to-noise ratio:
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** Phono 1, 2 MM: 90dB bei 2,5mV
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** Phono 1, 2 MM: 90dB at 2.5mV
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** Phono 1, 2 MM: 96dB bei 5,0mV
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** Phono 1, 2 MM: 96dB at 5,0mV
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** Phono 1, 2 MM: 102dB bei 10mV
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** Phono 1, 2 MM: 102dB at 10mV
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** Phono 2 MC: 70dB bei 0,1mV
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** Phono 2 MC: 70dB at 0,1mV
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** Phono 2 MC: 76dB bei 0,2mV
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** Phono 2 MC: 76dB at 0.2mV
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** Phono 2 MC: 105dB bei 150mV  
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** Phono 2 MC: 105dB at 150mV  
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** Tuner, AUX, Tape, A, B: 105dB für 150mV Eingang
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** Tuner, AUX, Tape, A, B: 105dB for 150mV input
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* Rise Time: 0,5 bis 0,8 µS    
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* Rise Time: 0.5 to 0.8 µS  
 
* Slew Rate: ± 230V/µS
 
* Slew Rate: ± 230V/µS
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* Klangregelung
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* Tone Control
 
** Bass:  
 
** Bass:  
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*** 150Hz : ± 7,5dB bei 75Hz, ±10dB bei 25Hz  
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*** 150Hz : ± 7.5dB at 75Hz, ±10dB at 25Hz.
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*** 400Hz : ± 7,5dB bei 155Hz, ±10dB bei 50Hz
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*** 400Hz : ± 7.5dB at 155Hz, ±10dB at 50Hz.
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** Höhen:
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Treble:
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*** 3Khz : ± 7,5dB bei 10kHz, ±10dB bei 20kHz  
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*** 3Khz : ± 7.5dB at 10kHz, ±10dB at 20kHz  
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*** 6Khz : ± 7,5dB bei 20kHz, ±10dB bei 40kHz
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*** 6Khz : ± 7.5dB at 20kHz, ±10dB at 40kHz
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* Loudness : +3 / +6 / +9dB bei 30Hz oder 100Hz  
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Loudness : +3 / +6 / +9dB at 30Hz or 100Hz  
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* High Filter : 12dB / Oktave über 8Khz  
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* High Filter : 12dB / octave above 8Khz  
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* Subsonic Filter : 6dB / Oktave unter 18Hz  
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* Subsonic Filter : 6dB / octave below 18Hz  
  
  
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'''Besondere Ausstattungen'''
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'''Special Features'''
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* Vor-/Endstufe auftrennbar
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* Pre- / power stage separable
  
  
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== Bemerkungen ==
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== Remarks ==
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* Weitere Modelle der gleichen Serie:
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* Other models in the same series:
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** [[Kenwood KA-305|KA-305]]
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** [[Kenwood KA-305]]
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** [[Kenwood KA-501|KA-501]]
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** [[Kenwood KA-501]]
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** [[Kenwood KA-601|KA-601]]
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** [[Kenwood KA-601]]
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** [[Kenwood KA-701|KA-701]]
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** [[Kenwood KA-701]]
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** [[Kenwood KA-801|KA-801]]
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** [[Kenwood KA-801]]
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** [[Kenwood KA-907|KA-907]]
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** [[Kenwood KA-907]]
  
  
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* Korrespondierender Tuner:
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* [[Corresponding Tuner]]
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** [[Kenwood KT-917|KT-917]]
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** [[Kenwood KT-917]]
  
  
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== Bilder ==
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== Pictures ==
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* Auszug aus Prospekt: Kenwood KA-907
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* Extract from brochure: Kenwood KA-907
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[[Datei:Kenwood KA-907-Prospekt-1.jpg]]
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[[File:Kenwood KA-907-Prospekt-1.jpg]]
  
  
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== Berichte ==
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== Reviews ==
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* Audio Test attestierte echte 202+202 Watt an 8Ohm und 308+308 Watt an 4 Ohm
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* Audio Test attested real 202+202 watts at 8ohms and 308+308 watts at 4 ohms.
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* Bericht von "Hifi Studio": [http://www.hifi-studio.de/hifi-klassiker/kenwood/KA-907_KT-917/KA-907_KT-917.htm]
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* Bericht von "Mackern": [http://www.mackern.de/index.php/2008/12/19/kenwood-ka-907/]
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* Review by "Hifi Studio": [https://web.archive.org/web/20170604110040/http://www.hifi-studio.de/hifi-klassiker/kenwood/KA-907_KT-917/KA-907_KT-917.htm]
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* Bericht von "Good Old Hifi": [http://www.good-old-hifi.de/kenwood_ka-907/]
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 +
* Report from "Mackers": [http://www.mackern.de/index.php/2008/12/19/kenwood-ka-907/]
 +
 
 +
* Report from "Good Old Hifi": [http://www.good-old-hifi.de/kenwood_ka-907/]
 +
 
 +
 
 +
* Fascination Kenwood KA-907!
 +
* An amp. with unadulterated sound, absolute noise-free, stereo channel separation, the minimum distortion up to the highest volumes, no matter what speakers. The 907 shows how good speakers are. If the sound is bad, it is because of the speakers! An amp should reproduce signals without distortion, preferably with a lot of power, and the 907 does that brilliantly! The quality is unique! Especially for phono lovers! Developed by Trio-Kenwood!
  
  
 
== Links ==
 
== Links ==
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* Externer Link auf Webseite "Wegavision Pytalhost": [http://www.hifi-studio.de/hifi-klassiker/kenwood/KA-907_KT-917/KA-907_KT-917.htm]
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* External link to website "Hifi Archive": [http://www.hifi-archiv.info/Kenwood/1980-1/07.jpg]
 +
 
 +
* External link on website "The Vintage Knob": [http://www.thevintageknob.org/kenwood-KA-907.html]
  
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* Externer Link auf Webseite "The Vintage Knob": [http://www.thevintageknob.org/kenwood-KA-907.html]
 
  
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[[Kategorie:Vollverstärker]]
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[[Category:Integrated Amplifier]]

Latest revision as of 02:02, 1 January 2021

Data[edit]

General

  • Manufacturer: Kenwood
  • Model: KA-907
  • Type: Stereo integrated amplifier
  • Years of manufacture: 1979 - 1981
  • Made in: Japan
  • Colour: Silver, variants Kenwood KA-9077 in grey metallic, Trio KA-9900 Japan execution
  • Power consumption: 1000 W at full power
  • Dimensions (WxHxD): 460 x 161 x 463 mm
  • Weight: 25,8 kg
  • Original price approx.: 2'798 DM
  • New price D-90 handles: 200 DM


Connections

  • Number of inputs:
    • Input sensitivity:
    • Phono 1 MM: 2.5mV, 33 kOhm, 47 kOhm, 100 kOhm, max 230mV RMS (1Khz, 0.01% THD).
    • Phono 1 MC: 0.1mV, 100 Ohm, max. 9mV RMS (1Khz, 0.01% THD)
    • Phono 2 MM: 2.5mV, 47 kOhm, 47 kOhm, 100 kOhm, max. 230mV RMS (1Khz, 0.01% THD)
    • Tuner: 150mV, 50 kOhm
    • AUX 1,2: 150mV, 50 kOhm
    • Tape Play A, B: 150mV, 50 kOhm
    • Main In: 1V / 50kOhm
  • Number of Outputs:
    • Outputs:
    • Tape Rec: 150mV, 180 Ohm

DIN: 30mV / 80 Ohm

    • Pre Out: 9V max. / 750 Ohm
    • Headphones
    • 2 pairs of speakers


Technical Data

  • Continuous power (at THD)
    • 8 Ohm: 2x 150W (RMS, 20 Hz - 20 kHz, 0.01% THD), 2x 150W (1Khz)
    • 4 Ohm: 2x 180W (1Khz)
  • Dynamic power
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion:
    • Phono: 0.01% (rated power, volume at -20dB).
    • Phono IMD: 0.0045% (nominal power, 8 Ohm)

High Level: 0.01% (nominal power, 20Hz - 20kHz, 8 Ohm)

    • High Level: 0.006% (1/2 nominal power, 20Hz - 20Khz, 8 Ohm)
  • Attenuation Factor: 100 (DC - 20Khz, 8 Ohm)
  • Frequency Response:
    • DC - 400 kHz (+0 / -3dB, DC ON).
    • 1Hz - 400kHz (+0 / -3dB, DC OFF)
    • 20Hz - 20kHz (RIAA, ±0.2dB)
  • Power bandwidth: 5Hz - 100Khz (0.03% THD), -70dB (DIN 45500)
  • Signal-to-noise ratio:
    • Phono 1, 2 MM: 90dB at 2.5mV
    • Phono 1, 2 MM: 96dB at 5,0mV
    • Phono 1, 2 MM: 102dB at 10mV
    • Phono 2 MC: 70dB at 0,1mV
    • Phono 2 MC: 76dB at 0.2mV
    • Phono 2 MC: 105dB at 150mV
    • Tuner, AUX, Tape, A, B: 105dB for 150mV input
  • Rise Time: 0.5 to 0.8 µS
  • Slew Rate: ± 230V/µS
  • Tone Control
    • Bass:
      • 150Hz : ± 7.5dB at 75Hz, ±10dB at 25Hz.
      • 400Hz : ± 7.5dB at 155Hz, ±10dB at 50Hz.

Treble:

      • 3Khz : ± 7.5dB at 10kHz, ±10dB at 20kHz
      • 6Khz : ± 7.5dB at 20kHz, ±10dB at 40kHz

Loudness : +3 / +6 / +9dB at 30Hz or 100Hz

  • High Filter : 12dB / octave above 8Khz
  • Subsonic Filter : 6dB / octave below 18Hz


Special Features

  • Pre- / power stage separable


Remarks[edit]



Pictures[edit]

  • Extract from brochure: Kenwood KA-907

Kenwood KA-907-Prospekt-1.jpg


Reviews[edit]

  • Audio Test attested real 202+202 watts at 8ohms and 308+308 watts at 4 ohms.
  • Review by "Hifi Studio": [1]
  • Report from "Mackers": [2]
  • Report from "Good Old Hifi": [3]


  • Fascination Kenwood KA-907!
  • An amp. with unadulterated sound, absolute noise-free, stereo channel separation, the minimum distortion up to the highest volumes, no matter what speakers. The 907 shows how good speakers are. If the sound is bad, it is because of the speakers! An amp should reproduce signals without distortion, preferably with a lot of power, and the 907 does that brilliantly! The quality is unique! Especially for phono lovers! Developed by Trio-Kenwood!


Links[edit]

  • External link to website "Hifi Archive": [4]
  • External link on website "The Vintage Knob": [5]
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