Editing Backes & Müller Sigma

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== Data ==
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== Daten ==
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{{Navigation}}
'''General'''
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'''Allgemein'''
* Manufacturer: [[Backes & Müller]]
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* Hersteller: [[Backes & Müller]]
* Model: Sigma
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* Modell: Sigma
* Type: Loudspeaker
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* Baujahre: 1984 - 1990
* Years of manufacture: 1984 - 1990
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* Hergestellt in: Deutschland
* Made in: Germany
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* Farbe: Nußbaum, Esche, Esche schwarz, Mahagoni, Eiche dunkel
* Color: walnut, ash, ash black, mahogany, oak dark
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* Abmessungen: 280 x 620 x 290 mm (B x H x T)
* Dimensions: 280 x 620 x 290 mm (WxHxD)
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* Gewicht: 20,5 kg
* Weight: 20,5 kg
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* Neupreis ca.: 4.600,- DM (UVP, Paar)
* Original price approx.: 3'700 DM (RRP, pair)
 
  
  
'''Technical data'''
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'''Anschlüsse'''
* Type: 4-way, closed, fully active
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* Anzahl der Eingänge:
* drivers:
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** hier die Eingänge aufzählen (mit Empfindlichkeit/Impedanz)
** Low frequency: 1x 245 mm paper cone, regulated (Backes & Müller).
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* Anzahl der Ausgänge:
midrange:  
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** hier die Ausgänge aufzählen (mit Pegel/Impedanz)
*** version 1: 1x 120 mm paper cone (Isophon)
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*** version 2: 1x 120 mm ceramic cone
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** midrange/high frequency:  
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'''Technische Daten'''
*** version 1: 1x 50 mm metal dome (Visaton)
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* Bauart: 4-Wege, geschlossen, vollaktiv
*** version 2: 1x 50 mm ceramic cone
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* Chassis:
Tweeter:  
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** Tiefton: 1x 245 mm Papierkonus, geregelt (Backes & Müller)
*** version 1: 1x 25 mm metal dome (Visaton)
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** Mittelton:  
*** version 2: 1x 25 mm metal dome tweeter
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*** Version 1: 1x 120 mm Papierkonus (Isophon)
* Power output stages: (continuous/dynamic):
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*** Version 2: 1x 120 mm Keramikkonus
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** Mittelhochton:  
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*** Version 1: 1x 50 mm Metallkalotte (Visaton)
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*** Version 2: 1x 50 mm Keramikkonus
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** Hochton:  
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*** Version 1: 1x 25 mm Metallkalotte (Visaton)
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*** Version 2: 1x 25 mm Metallkalotte
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* Leistung Endstufen: (Dauer-/Dynamik-):
 
** Version 1: 4x 80 Watt
 
** Version 1: 4x 80 Watt
 
** Version 2: 4x 70 Watt
 
** Version 2: 4x 70 Watt
* Frequency response:
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* Frequenzgang:
* Transition Ranges:  
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* Übergangsbereiche:  
 
** Version 1: 300/3000/6000 Hz
 
** Version 1: 300/3000/6000 Hz
 
** Version 2: 180/880/4000 Hz
 
** Version 2: 180/880/4000 Hz
  
  
'''Special Features'''
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'''Besondere Ausstattungen'''
* Regulated bass chassis
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* geregeltes Basschassis
* Control for level and sensitivity
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* Regler für Pegel und Empfindlichkeit
 
 
  
== Remarks ==
 
* Other models of the same series:
 
* [[Backes & Müller Beta]]
 
* [[Backes & Müller Delta]]
 
* [[Backes & Müller Omega]]
 
* [[Backes & Müller Sigma]]
 
  
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== Bemerkungen ==
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Weitere Modelle der gleichen Serie:
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* [[Backes & Müller Delta|Delta]]
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* [[Backes & Müller Omega|Omega]]
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* [[Backes & Müller Sigma|Sigma]]
  
== Pictures ==
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== Bilder ==
* Image: Backes & Müller Sigma
 
[[File:Backes & Müller Sigma-1984.jpg]]
 
 
 
 
 
== Reports ==
 
* Report in "FonoForum" 11 / 1984
 
 
 
* Stereoplay issue 12/1986
 
Sound: very good
 
** Manufacturing quality: very good
 
** "Rank and Name": Top Class III (Reference)
 
:: "The B&M Sigma, for example, sounded quite soft in the bass, but abysmally deep and powerful..."
 
  
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== Berichte ==
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* Stereoplay Heft 12/1986
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** Klang: sehr gut
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** Fertigungsqualität: sehr gut
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** "Rang und Namen": Spitzenklasse III (Referenz)
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:: "Die B&M Sigma zum Beispiel klang im Baß recht weich, dafür aber abgrundtief und kräftig..."
  
 
== Links ==
 
== Links ==
  
 
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[[Kategorie:Aktivlautsprecher]]
[[Category:Active loudspeaker]]
 

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