Difference between revisions of "Backes & Müller Sigma"
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__NOTOC__ | __NOTOC__ | ||
| − | == | + | == Data == |
| − | {{ | + | {{navigation}} |
| − | ''' | + | '''General''' |
| − | * | + | * Manufacturer: [[Backes & Müller]] |
| − | * | + | * Model: Sigma |
| − | * | + | * Type: Loudspeaker |
| − | * | + | * Years of manufacture: 1984 - 1990 |
| − | * | + | * Made in: Germany |
| − | * | + | * Color: walnut, ash, ash black, mahogany, oak dark |
| − | * | + | * Dimensions: 280 x 620 x 290 mm (WxHxD) |
| − | * | + | * Weight: 20,5 kg |
| − | * | + | * Original price approx.: 3'700 DM (RRP, pair) |
| − | ''' | + | '''Technical data''' |
| − | * | + | * Type: 4-way, closed, fully active |
| − | * | + | * drivers: |
| − | ** | + | ** Low frequency: 1x 245 mm paper cone, regulated (Backes & Müller). |
| − | + | midrange: | |
| − | *** | + | *** version 1: 1x 120 mm paper cone (Isophon) |
| − | *** | + | *** version 2: 1x 120 mm ceramic cone |
| − | ** | + | ** midrange/high frequency: |
| − | *** | + | *** version 1: 1x 50 mm metal dome (Visaton) |
| − | *** | + | *** version 2: 1x 50 mm ceramic cone |
| − | + | Tweeter: | |
| − | *** | + | *** version 1: 1x 25 mm metal dome (Visaton) |
| − | *** | + | *** version 2: 1x 25 mm metal dome tweeter |
| − | * | + | * Power output stages: (continuous/dynamic): |
** Version 1: 4x 80 Watt | ** Version 1: 4x 80 Watt | ||
** Version 2: 4x 70 Watt | ** Version 2: 4x 70 Watt | ||
| − | * | + | * Frequency response: |
| − | * | + | * Transition Ranges: |
** 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''' |
| − | * | + | * Regulated bass chassis |
| − | * | + | * Control for level and sensitivity |
| − | == | + | == Remarks == |
| − | * | + | * Other models of the same series: |
| − | * [[Backes & Müller Beta]] | + | * [[Backes & Müller Beta]] |
| − | * [[Backes & Müller Delta]] | + | * [[Backes & Müller Delta]] |
| − | * [[Backes & Müller Omega]] | + | * [[Backes & Müller Omega]] |
| − | * [[Backes & Müller Sigma]] | + | * [[Backes & Müller Sigma]] |
| − | == | + | == Pictures == |
| − | * | + | * Image: Backes & Müller Sigma |
| − | [[ | + | [[File:Backes & Müller Sigma-1984.jpg]] |
| − | == | + | == Reports == |
| − | * | + | * Report in "FonoForum" 11 / 1984 |
| − | * Stereoplay | + | * 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..." |
| Line 67: | Line 67: | ||
| − | [[ | + | [[Category:Active loudspeaker]] |
Latest revision as of 02:46, 6 April 2020
Data[edit]
General
- Manufacturer: Backes & Müller
- Model: Sigma
- Type: Loudspeaker
- Years of manufacture: 1984 - 1990
- Made in: Germany
- Color: walnut, ash, ash black, mahogany, oak dark
- Dimensions: 280 x 620 x 290 mm (WxHxD)
- Weight: 20,5 kg
- Original price approx.: 3'700 DM (RRP, pair)
Technical data
- Type: 4-way, closed, fully active
- drivers:
- Low frequency: 1x 245 mm paper cone, regulated (Backes & Müller).
midrange:
- version 1: 1x 120 mm paper cone (Isophon)
- version 2: 1x 120 mm ceramic cone
- midrange/high frequency:
- version 1: 1x 50 mm metal dome (Visaton)
- version 2: 1x 50 mm ceramic cone
Tweeter:
- version 1: 1x 25 mm metal dome (Visaton)
- version 2: 1x 25 mm metal dome tweeter
- Power output stages: (continuous/dynamic):
- Version 1: 4x 80 Watt
- Version 2: 4x 70 Watt
- Frequency response:
- Transition Ranges:
- Version 1: 300/3000/6000 Hz
- Version 2: 180/880/4000 Hz
Special Features
- Regulated bass chassis
- Control for level and sensitivity
Remarks[edit]
- Other models of the same series:
- Backes & Müller Beta
- Backes & Müller Delta
- Backes & Müller Omega
- Backes & Müller Sigma
Pictures[edit]
- Image: Backes & Müller Sigma
Reports[edit]
- 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..."