Difference between revisions of "Yamaha A-720"

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== Daten ==
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== Data ==
{{Navigation}}
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{{navigation}}
'''Allgemein'''
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'''General'''
* Hersteller: [[Yamaha]]
+
* Manufacturer: [[Yamaha]]
* Modell: A-720
+
* Model: A-720
* Baujahre: 1985 - 1986
+
* Type: Integrated amplifier
* Typ: Vollverstärker
+
* Years of manufacture: 1985 - 1986
* Fernbedienung: Nein
+
* Remote control: No
* Leistungsaufnahme: 470 Watt (EU)
+
* Power consumption: 470 watts (EU)
* Abmessungen: 435 x 147 x 399 mm (B x H x T)
+
* Dimensions: 435 x 147 x 399 mm (WxHxD)
* Gewicht: 10,2 kg
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* Weight: 10,2 kg
* Farbe: silber und schwarz
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* Color: silver and black
* Neupreis ca.: 1000,- DM
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* Original price approx.: 1'000 DM
  
  
'''Anschlüsse'''
+
'''Connections'''
* Anzahl der Eingänge:
+
* Number of inputs:
 
** Phono MM/MC, Tuner, 2x Tape, Aux, CD
 
** Phono MM/MC, Tuner, 2x Tape, Aux, CD
* Anzahl der Ausgänge:
+
* Number of outputs:
** 3x Lautsprecher, 2x Rec-Out, Kopfhörer
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** 3x Speaker, 2x Rec-Out, Headphone
  
  
'''Technische Daten'''
+
'''Technical Data'''
* Dauerleistung (bei Klirrfaktor)
+
* Continuous power (at distortion factor)
 
** 8 Ohm: 2x 105 Watt (0,005%)
 
** 8 Ohm: 2x 105 Watt (0,005%)
 
** 4 Ohm: 2x 150 Watt (1%)
 
** 4 Ohm: 2x 150 Watt (1%)
  
* Dynamikleistung
+
* Dynamic power
 
** 8 Ohm: 2x 145 Watt
 
** 8 Ohm: 2x 145 Watt
 
** 6 Ohm: 2x 180 Watt
 
** 6 Ohm: 2x 180 Watt
 
** 4 Ohm: 2x 240 Watt
 
** 4 Ohm: 2x 240 Watt
  
* Gesamtklirrfaktor: 0,005%
+
* Total harmonic distortion: 0,005%
* Dämpfungsfaktor: 45
+
* Attenuation factor: 45
* Eingang (Empfindlichkeit/Impedanz)
+
* Input (sensitivity/impedance)
 
** Phono MM 2.5 mV /47 kOhm
 
** Phono MM 2.5 mV /47 kOhm
 
** Phono MC 160 µV /220 Ohm
 
** Phono MC 160 µV /220 Ohm
 
** CD, Aux, Tape, Tuner 150 mV /47 kOhm
 
** CD, Aux, Tape, Tuner 150 mV /47 kOhm
* Ausgang (Pegel/Impedanz)
+
* Output (level/impedance)
 
** Rec-Out 150 mV /470 Ohm
 
** Rec-Out 150 mV /470 Ohm
* Klangregelung:
+
* Tone control:
** Bass: +/- 10dB (20Hz), Scheitelfrequenz 350 Hz
+
** Bass: +/- 10dB (20Hz), peak frequency 350 Hz.
** Höhen: +/- 10 dB (20Hz), Scheitelfrequenz 3500 Hz
+
treble: +/- 10 dB (20Hz), peak frequency 3500 Hz
* Loudness: regelbar, -40 dB
+
* Loudness: adjustable, -40 dB
* Subsonic: schaltbar, -12dB unterhalb von 15Hz
+
* Subsonic: switchable, -12dB below 15Hz
* Mute: Ja, -20 dB
+
* Mute: Yes, -20 dB
* Direct/Line-Straight: Klangregler abschaltbar
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* Direct/Line-Straight: tone control can be switched off
* Brummspannungsabstand (kurzgeschlossen):
+
* Ripple (short-circuited):
* Stereokanaltrennung: 65 dB
+
* Stereo channel separation: 65 dB
* Signalrauschabstand: AUX/Tape/Tuner: 106 dB, Phono MM 92 dB, Phone MC 76dB
+
* Signal-to-noise ratio: AUX/Tape/Tuner: 106 dB, Phono MM 92 dB, Phone MC 76dB
  
  
'''Besondere Ausstattungen'''
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'''Special Features'''
* Record-Selector
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* Record Selector
* Mono/Stereo umschaltbar
+
* Mono/Stereo switchable
* Auto-Class A/AB schaltbar
+
* Auto-Class A/AB switchable
* Lautsprecherpaare einzeln ansteuerbar
+
* Loudspeaker pairs individually controllable
  
== Bemerkungen ==
 
Weitere Modelle der gleichen Serie:
 
* [[Yamaha A-320|A-320]]
 
* [[Yamaha A-420|A-420]]
 
* [[Yamaha A-520|A-520]]
 
* [[Yamaha A-720|A-720]]
 
* [[Yamaha A-1020|A-1020]]
 
  
Vorgängermodell:
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== Notes ==
* [[Yamaha A-700|A-700]]
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* Other models in the same series:
 +
* [[Yamaha A-320]]
 +
* [[Yamaha A-420]]
 +
* [[Yamaha A-520]]
 +
* [[Yamaha A-720]]
 +
* [[Yamaha A-1020]]
  
Nachfolgermodell:
 
* [[Yamaha AX-700|AX-700]]
 
  
== Bilder ==
+
* [[Previous model:
http://img25.imageshack.us/img25/9654/yamahaa720.jpg
+
* [[Yamaha A-700]]
http://img585.imageshack.us/img585/3766/a7207.jpg
 
  
  
http://img90.imageshack.us/img90/6419/a72010.jpg
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* Successor model:
http://img864.imageshack.us/img864/1411/a7209nju.jpg
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* [[Yamaha AX-700]]
http://img38.imageshack.us/img38/3747/a72011.jpg
+
 
 +
 
 +
== Pictures ==
 +
[[File:Yamaha A-720 1.JPG|1000px]]
 +
 
 +
<gallery>
 +
 
 +
Yamaha A-720 2.JPG
 +
Yamaha A-720 3.JPG
 +
</gallery>
 +
 
 +
== Reports ==
 +
* Report in "FonoForum" 3 / 1986
 +
 
 +
 
 +
* Very powerful amplifier with a beautiful appearance. Even after more than 20 years it is still a real powerhouse, but of course, like most old amplifiers, it has problems with the pots. It should be mentioned that all controls are made of aluminium.
  
== Berichte ==
 
Sehr kräftiger Verstärker mit schöner Optik. Auch nach über 20 Jahren ist er noch ein richtiges Kraftpaket, hat aber natürlich wie die meisten alten Verstärker Probleme mit den Potis. Oft ist eine Reperatur des Subsonicfilters nötig. Zu sagen wäre noch, dass alle Regler aus Aluminium sind.
 
  
 
== Links ==
 
== Links ==
  
[[Kategorie:Vollverstärker]]
+
 
 +
[[Category:Integrated amplifier]]

Latest revision as of 12:19, 30 May 2020

Data[edit]

General

  • Manufacturer: Yamaha
  • Model: A-720
  • Type: Integrated amplifier
  • Years of manufacture: 1985 - 1986
  • Remote control: No
  • Power consumption: 470 watts (EU)
  • Dimensions: 435 x 147 x 399 mm (WxHxD)
  • Weight: 10,2 kg
  • Color: silver and black
  • Original price approx.: 1'000 DM


Connections

  • Number of inputs:
    • Phono MM/MC, Tuner, 2x Tape, Aux, CD
  • Number of outputs:
    • 3x Speaker, 2x Rec-Out, Headphone


Technical Data

  • Continuous power (at distortion factor)
    • 8 Ohm: 2x 105 Watt (0,005%)
    • 4 Ohm: 2x 150 Watt (1%)
  • Dynamic power
    • 8 Ohm: 2x 145 Watt
    • 6 Ohm: 2x 180 Watt
    • 4 Ohm: 2x 240 Watt
  • Total harmonic distortion: 0,005%
  • Attenuation factor: 45
  • Input (sensitivity/impedance)
    • Phono MM 2.5 mV /47 kOhm
    • Phono MC 160 µV /220 Ohm
    • CD, Aux, Tape, Tuner 150 mV /47 kOhm
  • Output (level/impedance)
    • Rec-Out 150 mV /470 Ohm
  • Tone control:
    • Bass: +/- 10dB (20Hz), peak frequency 350 Hz.

treble: +/- 10 dB (20Hz), peak frequency 3500 Hz

  • Loudness: adjustable, -40 dB
  • Subsonic: switchable, -12dB below 15Hz
  • Mute: Yes, -20 dB
  • Direct/Line-Straight: tone control can be switched off
  • Ripple (short-circuited):
  • Stereo channel separation: 65 dB
  • Signal-to-noise ratio: AUX/Tape/Tuner: 106 dB, Phono MM 92 dB, Phone MC 76dB


Special Features

  • Record Selector
  • Mono/Stereo switchable
  • Auto-Class A/AB switchable
  • Loudspeaker pairs individually controllable


Notes[edit]




Pictures[edit]

Yamaha A-720 1.JPG

Reports[edit]

  • Report in "FonoForum" 3 / 1986


  • Very powerful amplifier with a beautiful appearance. Even after more than 20 years it is still a real powerhouse, but of course, like most old amplifiers, it has problems with the pots. It should be mentioned that all controls are made of aluminium.


Links[edit]