National MFB Speaker System (Motional Feed Back) SB-88H

Panasonic, Matsushita, National ナショナル (also tubes); Osaka

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  • Year
  • 1966
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 198811

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • 2 Loudspeakers
  • Power out
  • 10 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: National MFB Speaker System SB-88H - Panasonic, Matsushita,
  • Shape
  • Console with any shape - in general
  • Dimensions (WHD)
  • 15.25 x 26.38 x 9 inch / 387 x 670 x 229 mm
  • Notes

  • The National MFB Speaker System SB-88H uses Motional Feed Back technology, which is meant to increase low frequency response and decrease distortion while having relatively small cabinet sizes.

    The speaker uses a special cord with four wires (designation SWE-39). Two wires are for the signal and two for the feedback (MFB coil in front of speaker). A switch regulates the influence of the feedback sensor inside the MFB speakers.

    SB-88H is a two-way system equipped with:

    • 8" PM dynamic woofer EAS-20PZ33S
    • 2" PM dynamic horn tweeter EAS-5MM31S

    Frequency response: 30 - 20,000 Hz
    Crossover frequency: 3000 Hz
    Input power: 10 W
    Impedance: 8 Ω

    The speakers can be used e.g. with model National SA-52 H (18 tubes).

  • Net weight (2.2 lb = 1 kg)
  • 10 kg / 22 lb 0.4 oz (22.026 lb)
  • External source of data
  • Taylor Yee, Calgary, Canada
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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