Woofer B300B SP1071

KEF Electronics; Tovil, Maidstone, Kent

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  • Year
  • 1982 ?
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 179075

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Woofer B300B SP1071 - KEF Electronics; Tovil,
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 335 x 288 x 133 mm / 13.2 x 11.3 x 5.2 inch
  • Notes

  • A low frequency unit with visco-elastic damped bextrene diaphragm and high temperature coil assembly suitable for use where low distortion and high power handling are required.

    Specification  
    Nominal impedance: 8 ohms
    Nominal frequency range: 25 - 2000 Hz
    Typical enclosure volumes:  
      Totally enclosed box
      Reflex    		 65-75 litres
    90-180 litres
    Power handling:  
      Continuous sine wave
      Programme    		 35 V RMS
    200 W
    Voice coil:
    Nominal diameter    		 52 mm

     

    Tieftöner in Trichoidaler Form. Chassis-Korb aus Alu-Druckguss.

    Empfohlenes Gehäusevolumen: 65-75 L bei geschlossenem und
    80-130 L bei Bassreflex-Gehäuse.
    Belastbarkeit: 150 Watt Sinus
    200 Watt Musik.
    Impedanz: 8 Ohm.
    Frequenzbereich: 25 - 2000 Hz.
    Resonanzfrequenz: 23 Hz.
    Magnetische Induktion: 10.200 Gauss.
    Magnetischer Fluss: 108.000 Maxwell.
    Schwingspule: 52 mm.
    Magnetische Güte: QM=5,3.
    Elektrische Güte: QE=0,5.
    Gesamtgüte: QT=0,46.

    Findet u.a. Anwendung in KEF 105.2, KM1, Metronom und im Selbstbauprojekt Largo (Elektor 9/85).

  • Net weight (2.2 lb = 1 kg)
  • 3.750 kg / 8 lb 4.2 oz (8.26 lb)
  • Source of data
  • - - Manufacturers Literature
  • Literature/Schematics (1)
  • - - Manufacturers Literature (KEF Data Sheet B300B Specification Number SP1071)
  • Author
  • Model page created by Peter Zimmermann. See "Data change" for further contributors.

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