Difference between revisions of "Hitachi HMA-8300"
 
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__NOTOC__
 
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== Daten ==
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== Data ==
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{{Navigation}}
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{{navigation}}
 +
'''General'''
 +
* Manufacturer: [[Hitachi]]
 +
* Model: HMA-8300
 +
* Type: Power amplifier, Class G, bipolar power transistors
 +
* Years of manufacture: 1976 - 1979
 +
* Made in: Japan
 +
* Color: Black
 +
* Remote control: No
 +
* Power Consumption:
 +
** 1470 W (220 V - 240 V~ 4 Ohm).
 +
1100 W (220 V - 240 V~ 8 Ohm)
 +
** 850 W or 1020 VA (at 120 V~)
 +
* Dimensions: 435 (W) x 182 (H) x 404 (D) mm
 +
* Weight: 24 kg
 +
* Original price approx.: 2'000 DM
  
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'''Allgemein'''
 
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* Hersteller: [[Hitachi]]
 
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* Modell: HMA-8300
 
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* Baujahre: 1977 (bis 1981?)
 
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* Hergestellt in: Japan
 
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* Farbe: schwarz
 
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* Typ: Stereo, analog, Class G, bipolare Leistungstransistoren
 
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* Fernbedienung: Nein
 
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* Leistungsaufnahme:
 
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** 1470 W (220 V - 240 V~ 4 Ohm)
 
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** 1100 W (220 V - 240 V~ 8 Ohm)
 
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** 850 W oder 1020 VA (bei 120 V~)
 
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* Abmessungen: 435 (B) x 182 (H) x 404 (T) mm
 
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* Gewicht: 24 kg
 
−
* Neupreis ca.: 2'000 DM
 
  
 +
'''Connections'''
 +
* Number of inputs: 1 (approx. 50kOhm input resistance)
 +
* Number of outputs: 1 loudspeaker pair
  
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'''Anschlüsse'''
 
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* Anzahl der Eingänge: 1 (ca. 50kOhm Eingangswiderstand)
 
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* Anzahl der Ausgänge: 1 Lautsprecherpaar
 
  
 +
'''Technical Data'''
 +
* Continuous power (at distortion factor)
 +
** 8 Ohm: 200 W/K. + 200 W/K. (20 Hz - 20 kHz, 0.1% total harmonic distortion)
 +
** 4 Ohm: 200 W/K. + 200 W/K. ( 1 kHz, 0.1% total harmonic distortion)
 +
* Dynamic power
 +
** 8 Ohm: 400 W/K. + 400 W/K. (music power)
 +
** 4 Ohm:
 +
* Total harmonic distortion:
 +
** at 1W Less than 0.05%.
 +
** at 100 W Less than 0,05%
 +
** at rated power Less than 0.1%
 +
* Attenuation factor: 50 (20 Hz - 20 kHz, 8 Ohm), 100 (1 kHz, 8 Ohm)
 +
* Frequency response: 5 Hz - 80 kHz (+/-1 dB)
 +
* Signal-to-noise ratio: Noise-to-noise ratio 110 dB (IHF, A-net)
 +
* Stereo channel separation: 80 dB (1 kHz, 8 Ohm)
 +
* Loudspeaker impedance:
 +
** 4-16 Ohm (except for Switzerland, UK & Sweden).
 +
8-16 Ohm (for Switzerland, Great Britain and Sweden)
 +
 +
 +
'''Special Features'''
 +
* One gain control per channel
 +
* switchable subsonic filter (rumble filter)
  
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'''Technische Daten'''
+
 
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* Dauerleistung (bei Klirrfaktor)
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== Remarks ==
−
** 8 Ohm: 200 W/K. + 200 W/K. (20 Hz - 20 kHz, 0,1% Gesamtklirrfaktor)
+
* First Class G amplifier ever offered. Marketed initially as "Dynaharmony" and "E-Series" (Series E). Late HMA-8300 models had the "Class G" designation directly. Class G technology reduces power dissipation in the power stage without sonic drawbacks, allowing the design of very high power amplifiers. Class G is widely used in stage and professional music today.
−
** 4 Ohm: 200 W/K. + 200 W/K. ( 1 kHz, 0,1% Gesamtklirrfaktor)
+
 
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* Dynamikleistung
+
* The HMA-8300 power amplifier is built with bipolar (!) power transistors, which accommodates Class G technology. Hitachi developed and released 'Power MOSFET' transistors in amplifiers at about the same time, but did not use these power transistors in Class G circuits. The HMA-7500, HMA-7500 MkII or HMA-8500 MkII series of power amplifiers and others are built with Hitachi's 'Power MOSFET' power transistors. This other series of Hitachi power amps then had much greater success and the power amps were often reference by HiFi magazines.
−
** 8 Ohm: 400 W/K. + 400 W/K. (Musikleistung)
+
 
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** 4 Ohm:
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* Other Class G ('Dynaharmony') devices from Hitachi:
−
* Gesamtklirrfaktor:
+
* Preamplifiers:
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** bei 1W                Weniger als 0,05%
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* [[Hitachi HCA-8300]]
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** bei 100 W              Weniger als 0,05%
 
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** bei Nennleistung      Weniger als 0,1%
 
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* Dämpfungsfaktor: 50 (20 Hz - 20 kHz, 8 Ohm), 100 (1 kHz, 8 Ohm)
 
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* Frequenzgang: 5 Hz - 80 kHz (+/-1 dB)
 
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* Signalrauschabstand: Geräuschspannungsabstand 110 dB (IHF, A-Netz)
 
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* Stereokanaltrennung: 80 dB (1 kHz, 8 Ohm)
 
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* Lautsprecherimpedanz:
 
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** 4—16 Ohm (außer für die Schweiz, Großbritannien u. Schweden)
 
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** 8—16 Ohm (für die Schweiz, Großbritannien u. Schweden)
 
  
  
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'''Besondere Ausstattungen'''
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* Power amplifiers:
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* Ein Gain-Regler je Kanal
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* [[Hitachi HA-5300]]
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* zuschaltbares Subsonic Filter (Rumpelfilter)
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* [[Hitachi HMA-8300]]
  
  
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== Bemerkungen ==
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* Receiver:
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* Erster jemals angebotener Class G Verstärker. Vermarktung zunächst unter der Bezeichnung "Dynaharmony" und "E-Serie" (Series E). Späte HMA-8300 Modelle hatten direkt die Bezeichnung "Class G". Class G Technologie reduziert die Verlustleistung in der Leistungsstufe ohne klangliche Nachteile und erlaubt damit die Konstruktion von Endstufen mit sehr hoher Leistung. Im Bereich der Bühnen- und Profi-Musik wird Class G heute viel eingesetzt.
+
* [[Hitachi SR-604]]
 +
* [[Hitachi SR-804]]
 +
* [[Hitachi SR-903]]
 +
* [[Hitachi SR-2004]]
 +
* [[Hitachi SR-6010]]
 +
* [[Hitachi SR-8010]]
  
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* Die Endstufe HMA-8300 ist mit bipolaren (!) Leistungstransistoren aufgebaut, was der Class G Technologie entgegenkommt. Hitachi hat ungefähr zeitgleich die 'Power MOSFET' Transistoren in Verstärkern entwickelt und herausgebracht, aber diese Leistungstransistoren nicht in Class G Schaltungen eingesetzt. Die Endstufen-Reihe HMA-7500, HMA-7500 MkII oder HMA-8500 MkII und weitere sind mit den 'Power MOSFET' Endtransistoren von Hitachi aufgebaut. Diese andere Serie von Hitachi-Endtufen hatte dann deutlich größeren Erfolg und die Endstufen waren häufig Referenz bei den HiFi-Zeitschriften.
 
  
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* Weitere Class G ("Dynaharmony") Geräte von Hitachi:
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== Pictures ==
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** [[Hitachi HA-5300]]
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* Image: Hitachi HMA-8300
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** [[Hitachi HMA-8300]]
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[[Image:Hitachi HMA-8300 Front.jpg]]
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** [[Hitachi SR-604]]
 
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** [[Hitachi SR-804]]
 
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** [[Hitachi SR-903]]
 
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** [[Hitachi SR-2004]]
 
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** [[Hitachi SR-6010]]
 
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** [[Hitachi SR-8010]]
 
  
  
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== Bilder ==
+
* Excerpt from brochure: Hitachi HCA-8300, HMA-8300
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* Bild: Hitachi HMA-8300
+
[[File:Hitachi HCA-HMA-8300-Prospekt-1.jpg]]
−
[[Bild:Hitachi HMA-8300 Front.jpg]]
 
  
  
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== Berichte ==
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== Reports ==
  
  
Line 77: Line 88:
  
  
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[[Kategorie:Endstufen]]
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[[Category:Power Amplifiers]]

Latest revision as of 08:17, 5 September 2019

Data[edit]

General

  • Manufacturer: Hitachi
  • Model: HMA-8300
  • Type: Power amplifier, Class G, bipolar power transistors
  • Years of manufacture: 1976 - 1979
  • Made in: Japan
  • Color: Black
  • Remote control: No
  • Power Consumption:
    • 1470 W (220 V - 240 V~ 4 Ohm).

1100 W (220 V - 240 V~ 8 Ohm)

    • 850 W or 1020 VA (at 120 V~)
  • Dimensions: 435 (W) x 182 (H) x 404 (D) mm
  • Weight: 24 kg
  • Original price approx.: 2'000 DM


Connections

  • Number of inputs: 1 (approx. 50kOhm input resistance)
  • Number of outputs: 1 loudspeaker pair


Technical Data

  • Continuous power (at distortion factor)
    • 8 Ohm: 200 W/K. + 200 W/K. (20 Hz - 20 kHz, 0.1% total harmonic distortion)
    • 4 Ohm: 200 W/K. + 200 W/K. ( 1 kHz, 0.1% total harmonic distortion)
  • Dynamic power
    • 8 Ohm: 400 W/K. + 400 W/K. (music power)
    • 4 Ohm:
  • Total harmonic distortion:
    • at 1W Less than 0.05%.
    • at 100 W Less than 0,05%
    • at rated power Less than 0.1%
  • Attenuation factor: 50 (20 Hz - 20 kHz, 8 Ohm), 100 (1 kHz, 8 Ohm)
  • Frequency response: 5 Hz - 80 kHz (+/-1 dB)
  • Signal-to-noise ratio: Noise-to-noise ratio 110 dB (IHF, A-net)
  • Stereo channel separation: 80 dB (1 kHz, 8 Ohm)
  • Loudspeaker impedance:
    • 4-16 Ohm (except for Switzerland, UK & Sweden).

8-16 Ohm (for Switzerland, Great Britain and Sweden)


Special Features

  • One gain control per channel
  • switchable subsonic filter (rumble filter)


Remarks[edit]

  • First Class G amplifier ever offered. Marketed initially as "Dynaharmony" and "E-Series" (Series E). Late HMA-8300 models had the "Class G" designation directly. Class G technology reduces power dissipation in the power stage without sonic drawbacks, allowing the design of very high power amplifiers. Class G is widely used in stage and professional music today.
  • The HMA-8300 power amplifier is built with bipolar (!) power transistors, which accommodates Class G technology. Hitachi developed and released 'Power MOSFET' transistors in amplifiers at about the same time, but did not use these power transistors in Class G circuits. The HMA-7500, HMA-7500 MkII or HMA-8500 MkII series of power amplifiers and others are built with Hitachi's 'Power MOSFET' power transistors. This other series of Hitachi power amps then had much greater success and the power amps were often reference by HiFi magazines.
  • Other Class G ('Dynaharmony') devices from Hitachi:
  • Preamplifiers:
  • Hitachi HCA-8300




Pictures[edit]

  • Image: Hitachi HMA-8300

Hitachi HMA-8300 Front.jpg


  • Excerpt from brochure: Hitachi HCA-8300, HMA-8300

Hitachi HCA-HMA-8300-Prospekt-1.jpg


Reports[edit]

Links[edit]

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