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'''
+
'''General'''
−
* Hersteller: [[Kenwood]]
+
* Manufacturer: [[Kenwood]]
−
* Modell: KA-907
+
* Model: KA-907
−
* Baujahre: 1980
+
* Type: Stereo integrated amplifier
−
* Hergestellt in: Japan
+
* Years of manufacture: 1979 - 1981
−
* Farbe: Silber/Grau
+
* Made in: Japan
−
* Typ: (Analog)
+
* Colour: Silver, variants [[Kenwood KA-9077]] in grey metallic, Trio KA-9900 Japan execution
−
* Fernbedienung: Nein
+
* Power consumption: 1000 W at full power
−
* Leistungsaufnahme: max. '''710 Watt'''
+
* Dimensions (WxHxD): 460 x 161 x 463 mm
−
* Abmessungen: 440 x 153 x 407
+
* Weight: 25,8 kg
−
* Gewicht: 17,5kg
+
* Original price approx.: 2'798 DM
−
* Neupreis ca.: DM 2000
+
* New price D-90 handles: 200 DM
  
  
−
'''Anschlüsse'''
+
'''Connections'''
−
* Anzahl der Eingänge:
+
* Number of inputs:
−
** Tuner, Aux, Phono, Tape A/B
+
** Input sensitivity:
−
* Anzahl der Ausgänge:
+
** Phono 1 MM: 2.5mV, 33 kOhm, 47 kOhm, 100 kOhm, max 230mV RMS (1Khz, 0.01% THD).
−
** Tape Rec Out A/B
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** Phono 1 MC: 0.1mV, 100 Ohm, max. 9mV RMS (1Khz, 0.01% THD)
−
** Kopfhörer
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** Phono 2 MM: 2.5mV, 47 kOhm, 47 kOhm, 100 kOhm, max. 230mV RMS (1Khz, 0.01% THD)
−
** Lautsprecher A/B
+
** 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
  
−
'''Technische Daten'''
+
 
−
* Dauerleistung (bei Klirrfaktor)
+
'''Technical Data'''
−
** 8 Ohm: 2x  110Watt
+
* 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:  
 
** 4 Ohm:  
−
* Dynamikleistung
+
* Total harmonic distortion:
−
** 8 Ohm: 2 x 160Watt
+
** Phono: 0.01% (rated power, volume at -20dB).
−
** 4 Ohm:  
+
** Phono IMD: 0.0045% (nominal power, 8 Ohm)
−
* Gesamtklirrfaktor:   0,015
+
High Level: 0.01% (nominal power, 20Hz - 20kHz, 8 Ohm)
−
* Dämpfungsfaktor: (DC - 20khz, 8 Ohm) 100Hz
+
** High Level: 0.006% (1/2 nominal power, 20Hz - 20Khz, 8 Ohm)
−
* Frequenzgang: DC - 400 kHz 0, -3dB
+
* Attenuation Factor: 100 (DC - 20Khz, 8 Ohm)
−
* Leistungsbandbreite: 5 Hz - 70kHz, 0,03%
+
* Frequency Response:  
−
* Signalrauschabstand: Phono1 90dB(60dB); Tuner AUX Tape 105dB(60dB)    
+
** DC - 400 kHz (+0 / -3dB, DC ON).
−
* Stereokanaltrennung:
+
** 1Hz - 400kHz (+0 / -3dB, DC OFF)
−
* Klangregelung:
+
** 20Hz - 20kHz (RIAA, ±0.2dB)
−
** Bass: ±10dB
+
* Power bandwidth: 5Hz - 100Khz (0.03% THD), -70dB (DIN 45500)
−
** Höhen: ±10dB
+
* Signal-to-noise ratio:
−
* Loudness: 9dB/100Hz
+
** Phono 1, 2 MM: 90dB at 2.5mV
−
* High Filter:
+
** Phono 1, 2 MM: 96dB at 5,0mV
−
* Low Filter (Subsonic):
+
** Phono 1, 2 MM: 102dB at 10mV
−
* Mute:
+
** Phono 2 MC: 70dB at 0,1mV
−
* Direct/Line-Straight:
+
** 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
  
−
'''Besondere Ausstattungen'''
 
−
* VU-Meter(Leistungsanzeige)
 
  
 +
'''Special Features'''
 +
* Pre- / power stage separable
  
−
== Bemerkungen ==
 
−
Weitere Modelle der gleichen Serie:
 
−
* [[Kenwood KA-305|KA-305]]
 
−
* [[Kenwood KA-501|KA-501]]
 
−
* [[Kenwood KA-601|KA-601]]
 
−
* [[Kenwood KA-701|KA-701]]
 
−
* [[Kenwood KA-801|KA-801]]
 
−
* [[Kenwood KA-907|KA-907]]
 
  
 +
== Remarks ==
 +
* Other models in the same series:
 +
** [[Kenwood KA-305]]
 +
** [[Kenwood KA-501]]
 +
** [[Kenwood KA-601]]
 +
** [[Kenwood KA-701]]
 +
** [[Kenwood KA-801]]
 +
** [[Kenwood KA-907]]
  
−
== Bilder ==
 
  
 +
* [[Corresponding Tuner]]
 +
** [[Kenwood KT-917]]
  
−
== Berichte ==
 
  
 +
== Pictures ==
 +
* Extract from brochure: Kenwood KA-907
 +
[[File:Kenwood KA-907-Prospekt-1.jpg]]
  
−
== Links ==
 
  
 +
== Reviews ==
 +
* Audio Test attested real 202+202 watts at 8ohms and 308+308 watts at 4 ohms.
  
−
[[Kategorie:Vollverstärker]]
+
* 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]
−
'''KENWOOD HIGH SPEED DC INTEGRATED AMPLIFIER'''
 
  
−
'''Leistung: 150+150 WPC minimum RMS beide Kanäle betrieben, an 8 Ohm zwischen 20Hz bis 20000Hz mit weniger als 0,01% total  harmonischer Verzerrungen           
+
* Report from "Mackers": [http://www.mackern.de/index.php/2008/12/19/kenwood-ka-907/]
−
               
 
  
−
Beide Kanäle betrieben:  
+
* Report from "Good Old Hifi": [http://www.good-old-hifi.de/kenwood_ka-907/]
−
                              150+150 Watt an 8Ohm bei 1000Hz
 
−
                              180+180 Watt an 4Ohm bei 1000Hz
 
−
von Audio Test
 
−
atesttierte tatsächliche
 
−
Dauerleistung:            
 
−
                            202+202 Watt an 8Ohm
 
−
                            308+308 Watt an 4 Ohm
 
  
−
Total harmonische Verzerrung
 
−
(20Hz bis 20000Hz)             
 
−
           
 
−
AUX Eingang bis SPEAKER Ausgang:       
 
−
                                        0,01% bei Vollaussteuerung an 8Ohm
 
−
                                        0,006% bei halber Aussteuerung an 8Ohm
 
−
Phono Eingang bis SPEAKER Ausgang:     
 
−
                                        0,01% bei Vollaussteuerung mit VOLUME bei -20dB
 
−
                                       
 
−
Intermodulations Verzerrung     
 
−
(60Hz: 7kHz=4:1)                       
 
−
                                        0,0045% bei Vollaussteuerung an 8Ohm
 
  
−
Dämpfungsfaktor:                       
+
* Fascination Kenwood KA-907!
−
                                        100. DC~20000Hz bei 8Ohm
+
* 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!
−
 
−
Rise Time:                             
 
−
                                        0,5 bis 0,8 µS   
 
−
Slew Rate:                             
 
−
                                        +-230V/µS
 
−
Leistungsbandbreite:                   
 
−
                                        5Hz bis100kHz bei 0,003% T.H.D.
 
  
−
Frequenzgang:     
 
−
DC COUPLED an:                         
 
−
                                        DC bis 100kHz bei 0,003 T.H.D.
 
−
DC COUPLED aus:                       
 
−
                                        1Hz bis 400kHz +0dB, -3dB
 
−
Speakerimpedanz:                       
 
−
                                        4-16 Ohm
 
  
−
Eingansempfindlichkeit/Impedanz:
+
== Links ==
−
Power IN:                          
+
* External link to website "Hifi Archive": [http://www.hifi-archiv.info/Kenwood/1980-1/07.jpg]
−
                                    1V/50kOhm
 
−
Phono1 (MM):                      
 
−
                                    2,5mV/33kOhm, 47kOhm und 100 kOhm
 
−
Phono2 (MM):                       
 
−
                                    2,5mV/47kOhm
 
−
Phono1 (MC):                       
 
−
                                    0,1mV/100Ohm
 
−
Tuner, AUX,Tape A, B:             
 
−
                                    150mV/50kOhm
 
−
 
 
−
Signal to Noise Ratio (IHF, A): 
 
−
Phono1&2 (MM):                     
 
−
                                    90dB für 2,5 mV Eingang
 
−
                                    96dB für 5mV Eingang
 
−
                                    102 für 10 mV Eingang
 
−
Phono1 (MC):                       
 
−
                                    70dB für 0,1 mV Eingang 
 
−
                                    76dB fürfür 0,2 mV Eingang
 
−
Tuner, AUX, Tape, A, B:             
 
−
                                    105dB für 150mV Eingang
 
−
 
 
−
Maximaler Einganslevel: 
 
−
 
 
−
für Phono1&2 (MM):                 
 
−
                                    230mV (RMS), T.H.D. 0,01% bei 1000Hz
 
−
für Phono1 (MC):                   
 
−
                                    9mV (RMS), T.H.D. 0,01% bei 1000Hz
 
−
 
 
−
Ausgangslevel Impedanz:     
 
−
 
 
−
Tape REC (pin):                     
 
−
                                    150mV/180Ohm
 
−
        (DIN):                      30mV/80kOhm
 
−
PRE OUT (Maximum):                 
 
−
                                    9V/750Ohm 
 
−
 
 
−
Frequenzgang für Phono:           
 
−
                                          RIAA standart curve +-2dB                         
 
−
                                          (20Hz bis 20000Hz)
 
−
 
−
Klangregelung:               
 
  
−
Bass:                              
+
* External link on website "The Vintage Knob": [http://www.thevintageknob.org/kenwood-KA-907.html]
−
                                    +-10dB Crossover Freq. 400Hz und 150Hz
 
−
Treble:                             
 
−
                                    +-10dB Crossover Freq. 3kHz und 6 kHz
 
  
−
Loudness (gehörrichtige Lautstärkeanhebung) 
 
−
(at-50dB VOLUME Level)
 
−
                                            +3dB, +6dB, +9dB bei 30Hz oder 100Hz
 
−
Subsonic Filter:             
 
−
                              18Hz, 6dB/oct
 
−
High Filter:                 
 
−
                              8kHz, 12dB/oct
 
  
−
GENERELL
+
[[Category:Integrated Amplifier]]
−
Leistungsaufnahme:       
 
−
                              1000 Watt
 
−
A,C Outlet:                 
 
−
                              Switched 2, Unswitched 2
 
−
Größe:                       
 
−
                              BxHxT= 460x161x463mm
 
−
Gewicht:                     
 
−
                              25,8Kg (56,9lbs)
 
−
alle Waagen auf denen ich
 
−
Ihn hatte zeigten aber:     
 
−
                              28,3Kg
 
−
 
−
Das obere Gerät repräsentiert den passenden Tuner [[Kenwood KT-917]] die Daten zu Diesem Folgen noch in der entsprechenden Rubrik.
 
−
http://img264.imageshack.us/img264/3295/75726681th0.jpg
 
−
[[Kategorie:Vollverstärker]]
 

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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