Difference between revisions of "Dual CS 721"

 
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__NOTOC__
 
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== Daten ==
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== Data ==
{{Navigation}}
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{{navigation}}
'''Allgemein'''
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'''General'''
* Hersteller: [[Dual]] Gebrüder Steidinger
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* Manufacturer: [[Dual]] Steidinger Brothers
* Modell: CS 721, CS 721 S in Schwarz
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* Model: CS 721, CS 721 S in black
* Typ: Plattenspieler
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* Type: Record player
* Baujahre: 1976 - 1979
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* Years of manufacture: 1976 - 1979
* Hergestellt in: Deutschland
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* Made in: Germany
* Farbe: Nußbaum, Schwarz
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* Color: Walnut, Black
* Leistungsaufnahme: 2,5 Watt
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* Power consumption: 2,5 Watt
* Abmessungen: 424 x 150 x 368 mm (BxHxT)
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* Dimensions: 424 x 150 x 368 mm (WxHxD)
* Gewicht: 7,8 kg
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* Weight: 7.8 kg
* Neupreis ca.: 830 DM mit Shure V 15 III  
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* Original price approx.: 830 DM with Shure V 15 III  
  
  
'''Anschlüsse'''
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'''Connections'''
* Ausgänge:
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* Outputs:
* Eingänge:
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* Inputs:
  
  
'''Technische Daten'''
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'''Technical Data'''
* Antrieb: Direkt (EDS 1000-2)
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* Drive: Direct (EDS 1000-2)
* Drehzahl: 33 1/3, 45 UPM
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* Speed: 33 1/3, 45 UPM
* Gleichlaufschwankungen: ±0,03%/0,018% (DIN bewertet/WRMS)
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* Synchronous fluctuations: ±0,03%/0,018% (DIN rated/WRMS)
* Rumpelgeräuschabstand: 70 dB
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* Rumble noise ratio: 70 dB
* Plattenteller: 304mm Aluminiumdruckguß, 1,5 Kg;  
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* Turntable: 304mm die-cast aluminium, 1.5 Kg;  
* Gesamte Drehmasse des Antriebssystems (Rotor mit Plattenteller): 3 KG
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* Total rotating mass of drive system (rotor with platter): 3 KG
* Betriebsart: Vollautomatik
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* Operating mode: fully automatic
 
* Pitch: ±5%
 
* Pitch: ±5%
  
  
'''Besondere Ausstattungen'''
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'''Special Features'''
* Mit Magnettonabnehmersystem Shure V 15 III
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* With magnetic pickup system Shure V 15 III
 
* Antiresonator
 
* Antiresonator
 
* Subchassis
 
* Subchassis
* Dauerspielschaltung
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* Continuous playback circuit
* Leuchtstroboskop
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* Illuminated stroboscope
* höhenverstellbarer Tonarm
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* Height-adjustable tone arm
* Tonarmlift mit einstellbarer Absenkgeschwindigkeit
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* tonearm lift with adjustable lowering speed
* Antiskating
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* anti-skating
* Gewichtsbalancierter Tonarm, Einstellung der Auflagekraft mittels Feder
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* Weight-balanced tonearm, adjustment of the contact force by means of spring
  
== Bemerkungen ==
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== Remarks ==
* Weitere Modelle der gleichen Serie:
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* Other models of the same series:
 
* [[Dual CS 504]]
 
* [[Dual CS 504]]
 +
* [[Dual CS 510]]
 
* [[Dual CS 521]]
 
* [[Dual CS 521]]
 +
* [[Dual CS 601]]
 
* [[Dual CS 604]]
 
* [[Dual CS 604]]
 
* [[Dual CS 621]]
 
* [[Dual CS 621]]
 
* [[Dual CS 704]]
 
* [[Dual CS 704]]
 +
* [[Dual CS 721]]
  
  
== Bilder ==
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== Pictures ==
* Bild: Dual CS-721 in Schwarz
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* Image: Dual CS-721 in black
[[Bild:721zwei.jpg]]
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[[Image:721two.jpg]]
  
  
* Bild: Dual CS-721 in Nußbaum
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* Picture: Dual CS-721 in walnut
[[Datei:Dual CS 721.jpg]]
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[[File:Dual CS 721.jpg]]
  
  
* Auszug aus Bedienungsanleitung: Dual CS-721 in Nußbaum
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* Excerpt from instruction manual: Dual CS-721 in walnut
[[Datei:Dual CS-721-Prospekt-1.jpg]]
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[[File:Dual CS-721-Prospekt-1.jpg]]
  
  
== Berichte ==
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== Reviews ==
* Letztes Spitzenmodell mit mittelschwerem (~ 12gr) Tonarm vor der ULM-Ära.
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* Last top of the line model with medium weight (~12gr) tonearm before the ULM era.
* Dank diesem und der bequemen VTA-Justagemöglichkeit sehr flexibel bei der Tonabnehmerwahl.  
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* Very flexible in cartridge choice thanks to this and the convenient VTA adjustment option.  
* Obwohl ab Werk schon mit einem guten V15/III L-M bestückt lohnt die Verwendung von wesentlich besseren TAs. Wie auch bei einigen anderen Dual-Modellen hat der Arm ein sehr gutes "Verhältniss"
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* Although already equipped with a good V15/III L-M from the factory, the use of much better TAs is worthwhile. As with some other Dual models, the arm has a very good "ratio"
mit "Budget"-MCs von Denon (DL30x),Dynavector (DV23/DV17) sowie diversen Top-MMs von Audio Technica (z.B. AT20SLa).
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with "budget" MMs from Denon (DL30x),Dynavector (DV23/DV17) as well as various top MMs from Audio Technica (e.g. AT20SLa).
* Aus heutiger Sicht fehlt dem 721 vor allem eine Quarzverriegelung der Antriebsservorregelung und eine dem Gerät qualitätsäquivalente Behausung.
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From today's point of view, the 721 lacks above all a quartz lock of the drive servo control and a housing of equivalent quality to the device.
  
  
* Die oben genannten Preise sind wohl ehemalige Listenpreise, denn schon im Hifi-Jahrbuch 9 wird der 721 mit V15 mit 728 DM beziffert.
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* The above mentioned prices are probably former list prices, because already in the Hifi Yearbook 9 the 721 with V15 is listed with 728 DM.
* Anfang der Achtziger gingen die 721er aus der neueren Fertigung (die mit Pickelteller) für ~ 500 DM weg und wurden stapelweise als Auslaufmodelle abverkauft.  
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* At the beginning of the eighties the 721s from the newer production (the ones with pick plate) were sold for ~ 500 DM and were sold off in piles as discontinued models.  
* Mittlerweile neigt der 721 im Gebrauchtmarkt zu Liebhaberpreisen.
+
Meanwhile the 721 tends to lover prices in the used market.
  
  
* Anders als bei vielen japanischen Direkttrieblern basiert die Servoregelung des Motors nicht auf einem speziellen PLL-Chip der mittlerweile Unobtanium ist.
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Unlike many Japanese direct drives, the servo control of the motor is not based on a special PLL chip which is now unobtanium.
  
  
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[[Kategorie:Plattenspieler]]
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[[Category:Turntables]]

Latest revision as of 06:34, 5 May 2019

Data[edit]

General

  • Manufacturer: Dual Steidinger Brothers
  • Model: CS 721, CS 721 S in black
  • Type: Record player
  • Years of manufacture: 1976 - 1979
  • Made in: Germany
  • Color: Walnut, Black
  • Power consumption: 2,5 Watt
  • Dimensions: 424 x 150 x 368 mm (WxHxD)
  • Weight: 7.8 kg
  • Original price approx.: 830 DM with Shure V 15 III


Connections

  • Outputs:
  • Inputs:


Technical Data

  • Drive: Direct (EDS 1000-2)
  • Speed: 33 1/3, 45 UPM
  • Synchronous fluctuations: ±0,03%/0,018% (DIN rated/WRMS)
  • Rumble noise ratio: 70 dB
  • Turntable: 304mm die-cast aluminium, 1.5 Kg;
  • Total rotating mass of drive system (rotor with platter): 3 KG
  • Operating mode: fully automatic
  • Pitch: ±5%


Special Features

  • With magnetic pickup system Shure V 15 III
  • Antiresonator
  • Subchassis
  • Continuous playback circuit
  • Illuminated stroboscope
  • Height-adjustable tone arm
  • tonearm lift with adjustable lowering speed
  • anti-skating
  • Weight-balanced tonearm, adjustment of the contact force by means of spring

Remarks[edit]


Pictures[edit]

  • Image: Dual CS-721 in black

File:721two.jpg


  • Picture: Dual CS-721 in walnut

Dual CS 721.jpg


  • Excerpt from instruction manual: Dual CS-721 in walnut

Dual CS-721-Prospekt-1.jpg


Reviews[edit]

  • Last top of the line model with medium weight (~12gr) tonearm before the ULM era.
  • Very flexible in cartridge choice thanks to this and the convenient VTA adjustment option.
  • Although already equipped with a good V15/III L-M from the factory, the use of much better TAs is worthwhile. As with some other Dual models, the arm has a very good "ratio"

with "budget" MMs from Denon (DL30x),Dynavector (DV23/DV17) as well as various top MMs from Audio Technica (e.g. AT20SLa). From today's point of view, the 721 lacks above all a quartz lock of the drive servo control and a housing of equivalent quality to the device.


  • The above mentioned prices are probably former list prices, because already in the Hifi Yearbook 9 the 721 with V15 is listed with 728 DM.
  • At the beginning of the eighties the 721s from the newer production (the ones with pick plate) were sold for ~ 500 DM and were sold off in piles as discontinued models.

Meanwhile the 721 tends to lover prices in the used market.


Unlike many Japanese direct drives, the servo control of the motor is not based on a special PLL chip which is now unobtanium.


Links[edit]