4 x 6 inch Oval Standard Loudspeaker AD4681 /M4 /M8

Philips; Eindhoven (tubes international!); Miniwatt

  • Year
  • 1973
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 312322

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) - elliptical
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 4 x 6 inch Oval Standard Loudspeaker AD4681 /M4 /M8 - Philips; Eindhoven tubes
  • Dimensions (WHD)
  • 102 x 154 x 47.5 mm / 4 x 6.1 x 1.9 inch
  • Notes
  • Philips 4 x 6 inch Oval Standard Loudspeaker type AD4681 /M

    Available versions:

    • /M4:   Z= 4 Ω @ 135 Hz
    • /M8:   Z= 8 Ω @ 135 Hz

     

  • Net weight (2.2 lb = 1 kg)
  • 0.260 kg / 0 lb 9.2 oz (0.573 lb)
  • Mentioned in
  • -- Original-techn. papers. (Miniwatt Copresa "Altavoces" 1973)
  • Author
  • Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

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