Difference between revisions of "Kenwood KA-907"

 
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== Daten ==
+
== Data ==
{{Navigation}}
+
{{navigation}}
'''Allgemein'''
+
'''General'''
* Hersteller: [[Kenwood]]
+
* Manufacturer: [[Kenwood]]
* Modell: KA-907
+
* Model: KA-907
* Baujahre: 1978 - 1980
+
* Type: Stereo integrated amplifier
* Hergestellt in: Japan
+
* Years of manufacture: 1979 - 1981
* Farbe: Silber
+
* Made in: Japan
* Typ: Stereo Vollverstärker
+
* Colour: Silver, variants [[Kenwood KA-9077]] in grey metallic, Trio KA-9900 Japan execution
* Leistungsaufnahme: 1000 W bei voller Leistung
+
* Power consumption: 1000 W at full power
* Abmessungen (BxHxT): 460 x 161 x 463 mm
+
* Dimensions (WxHxD): 460 x 161 x 463 mm
* Gewicht: 25,8 kg
+
* Weight: 25,8 kg
* Neupreis ca.: 2498 DM
+
* Original price approx.: 2'798 DM
* Neupreis D-90 Griffe: 200 DM
+
* New price D-90 handles: 200 DM
  
  
 
+
'''Connections'''
Aux. IN to SP out THD : 0,01% (rated power, 20Hz...20Khz, 8 Ohm)
+
* Number of inputs:
0,006 % (1/2 rated power, 20Hz...20Khz, 8 Ohm)
+
** Input sensitivity:  
Phono IN to SP out : 0,01% (rated power, volume at -20dB)
+
** Phono 1 MM: 2.5mV, 33 kOhm, 47 kOhm, 100 kOhm, max 230mV RMS (1Khz, 0.01% THD).
IMD : 0,0045% (rated power, 8 Ohm)
+
** 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)
Rise time : 0,8µs
 
Slew rate : ± 230V/µs
 
Power bandwidth : 5Hz...100Khz (0,03% THD)  
 
-70dB (DIN 45500)
 
Frequency response : DC...400Khz (+0 / -3dB, DC ON)
 
1Hz...400Khz (+0 / -3dB, DC OFF)
 
20Hz...20Khz (RIAA, ±0,2dB)
 
Speaker impedance : 4...16 Ohm
 
Power IN sensitivity : 1V / 50kOhm
 
Inputs : 2,5mV / 33 - 47 - 100kOhm (Phono 1 MM)
 
2,5mV / 47kOhm (Phono 2 MC)
 
0,1mV / 100Ohm (Phono 1 MC)
 
150mV / 50kOhm (tuner, aux, tape 1 & 2)
 
S/N ratio : 90dB for 2,5mV input (phono 1 & 2, MM)
 
96dB for 5,0mV input (phono 1 & 2, MM)
 
102dB for 10mV input (phono 1 & 2, MM)
 
70dB for 0,1mV input (phono 1, MC)
 
76dB for 0,2mV input (phono 1, MC)
 
105dB for 150mV input (line level)
 
Max. phono input : 230mV RMS (1Khz, 0,01% THD, phono 1 & 2, MM)
 
9mV RMS (1Khz, 0,01% THD, phono 1, MC)  
 
Outputs : 150mV / 180 Ohm (TAPE rec)
 
30mV / 80 Ohm (TAPE rec, DIN)
 
9V max. / 750 Ohm (PRE output)
 
 
 
 
 
 
 
 
 
'''Anschlüsse'''
 
* Anzahl der Eingänge:
 
** Eingangsempfindlichkeit:
 
** Phono 1 MM: 2.5mV, 30 kOhm, 60 kOhm, 100 kOhm, max. 220mV
 
** Phono 2 MM: 2.5 - 5mV, regelbar, 50 kOhm, max. 220mV
 
 
** 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
* Anzahl der Ausgänge:
+
** Main In: 1V / 50kOhm
** Ausgänge:
+
* Number of Outputs:
** Line: 150mV, 80 kOhm
+
** Outputs:
** DIN: 80mV, 150 kOhm
+
** Tape Rec: 150mV, 180 Ohm
** Kopfhörer
+
DIN: 30mV / 80 Ohm
 +
** Pre Out: 9V max. / 750 Ohm
 +
** Headphones
 +
** 2 pairs of speakers
  
  
'''Technische Daten'''
+
'''Technical Data'''
* Dauerleistung (bei Klirrfaktor)
+
* Continuous power (at THD)
** 8 Ohm: 2x 150W (RMS, 20 Hz - 20 kHz, 0,01% THD), 2x 150W (1Khz)  
+
** 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)  
* Dynamikleistung
+
* Dynamic power
 
** 8 Ohm:   
 
** 8 Ohm:   
 
** 4 Ohm:  
 
** 4 Ohm:  
* Gesamtklirrfaktor: 0,08% THD bei 8 Ohm
+
* Total harmonic distortion:
* Dämpfungsfaktor: 100 (DC - 20Khz, 8 Ohm)  
+
** Phono: 0.01% (rated power, volume at -20dB).
* Frequenzgang: 5Hz - 50kHz
+
** Phono IMD: 0.0045% (nominal power, 8 Ohm)
* Signalrauschabstand:
+
High Level: 0.01% (nominal power, 20Hz - 20kHz, 8 Ohm)
** 76dB (MM)
+
** High Level: 0.006% (1/2 nominal power, 20Hz - 20Khz, 8 Ohm)
** 90dB (Line)
+
* Attenuation Factor: 100 (DC - 20Khz, 8 Ohm)
* Klangregelung
+
* 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:  
 
** Bass:  
*** 150Hz : ± 7,5dB bei 75Hz, ±10dB bei 25Hz  
+
*** 150Hz : ± 7.5dB at 75Hz, ±10dB at 25Hz.
*** 400Hz : ± 7,5dB bei 155Hz, ±10dB bei 50Hz
+
*** 400Hz : ± 7.5dB at 155Hz, ±10dB at 50Hz.
** Höhen:
+
Treble:
*** 3Khz : ± 7,5dB bei 10kHz, ±10dB bei 20kHz  
+
*** 3Khz : ± 7.5dB at 10kHz, ±10dB at 20kHz  
*** 6Khz : ± 7,5dB bei 20kHz, ±10dB bei 40kHz
+
*** 6Khz : ± 7.5dB at 20kHz, ±10dB at 40kHz
* Loudness : +3 / +6 / +9dB bei 30Hz oder 100Hz  
+
Loudness : +3 / +6 / +9dB at 30Hz or 100Hz  
* High Filter : 12dB / Oktave über 8Khz  
+
* High Filter : 12dB / octave above 8Khz  
* Subsonic Filter : 6dB / Oktave unter 18Hz  
+
* Subsonic Filter : 6dB / octave below 18Hz  
 
 
 
 
'''Besondere Ausstattungen'''
 
* Leistungsabsenker: 0 dB, -15 dB, -30 dB
 
* Loudness 4-stufig
 
* Vor- und Endstufe trennbar
 
 
 
 
 
== Bemerkungen ==
 
Weitere Modelle der gleichen Serie:
 
* Vollverstärker
 
** [[Kenwood Model 500|Model 500]]
 
** [[Kenwood Model 650|Model 650]]
 
* Endstufe Model 700M
 
** [[Kenwood Model 700 M|Model 700 M]]
 
  
* Korrespondierender Tuner Model 600 T
 
** [[Kenwood Model 600 T|Model 600 T]]
 
  
Kenwood empfahl dazu die Lautsprecher:
+
'''Special Features'''
* Model Seven
+
* Pre- / power stage separable
** [[Kenwood Modell Seven|Modell Seven]]
 
  
== Bilder ==
 
* Bild: Kenwood Model 600
 
[[Datei:Kenwood Model 600-1.jpg]]
 
  
* Bild: Den baugleichen Verstärker gab es auch mit bronzefarbiger Front als Kenwood Model 650
+
== Remarks ==
[[Datei:Kenwood Model 650-1.jpg]]
+
* Other models in the same series:
 +
** [[Kenwood KA-305]]
 +
** [[Kenwood KA-501]]
 +
** [[Kenwood KA-601]]
 +
** [[Kenwood KA-701]]
 +
** [[Kenwood KA-801]]
 +
** [[Kenwood KA-907]]
  
  
== Berichte ==
+
* [[Corresponding Tuner]]
* Bericht von "Good Old Hifi": [http://www.good-old-hifi.de/kenwood_model_600/]
+
** [[Kenwood KT-917]]
  
  
== Links ==
+
== Pictures ==
* Externer Link auf Webseite "Hifi Classics": [http://www.hifi-studio.de/hifi-klassiker/kenwood/Kenwood_600T-600/Kenwood_600.htm]
+
* Extract from brochure: Kenwood KA-907
 
+
[[File:Kenwood KA-907-Prospekt-1.jpg]]
* Externer Link auf Webseite "The Vintage Knob": [http://www.thevintageknob.org/kenwood-KA-907.html]
 
 
 
[[Kategorie:Vollverstärker]]
 
** 4 Ohm:
 
* Gesamtklirrfaktor:  0,015
 
* Dämpfungsfaktor: (DC - 20khz, 8 Ohm) 100Hz
 
* Frequenzgang:  DC - 400 kHz  0, -3dB
 
* Leistungsbandbreite:  5 Hz - 70kHz, 0,03%
 
* Signalrauschabstand: Phono1 90dB(60dB); Tuner AUX Tape 105dB(60dB) 
 
* Stereokanaltrennung:
 
* Klangregelung:
 
** Bass: ±10dB
 
** Höhen: ±10dB
 
* Loudness: 9dB/100Hz
 
* High Filter:
 
* Low Filter (Subsonic):
 
* Mute:
 
* Direct/Line-Straight:
 
  
'''Besondere Ausstattungen'''
 
* VU-Meter(Leistungsanzeige)
 
  
 +
== Reviews ==
 +
* Audio Test attested real 202+202 watts at 8ohms and 308+308 watts at 4 ohms.
  
== Bemerkungen ==
+
* 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]
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]]
 
  
 +
* Report from "Mackers": [http://www.mackern.de/index.php/2008/12/19/kenwood-ka-907/]
  
== Bilder ==
+
* Report from "Good Old Hifi": [http://www.good-old-hifi.de/kenwood_ka-907/]
  
  
== Berichte ==
+
* 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 ==
 +
* 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]
  
[[Kategorie:Vollverstärker]]
 
'''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           
 
               
 
 
Beide Kanäle betrieben:
 
                              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:                       
 
                                        100. DC~20000Hz bei 8Ohm
 
 
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:
 
Power IN:                         
 
                                    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:                               
 
                                    +-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]