• Country
• Netherlands

• Manufacturer / Brand
• Philips; Eindhoven (tubes international!); Miniwatt

• Year
• 1978 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 232161

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

• Number of Transistors
• 30

• Semiconductors
• BC558 BC548 BD137 MJ3001 MJ2501 BC549 BC559 BC547 BC546 BD267 or. BD266 BC550 BC264 BC639 BSS68 BAW62 BZY88 BZX79 CQY24 BY164

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Loudspeaker + integr.Amplifier

• Power type and voltage
• Alternating Current supply (AC) / 110-127; 220-240 Volt

• Loudspeaker
• 3 Loudspeakers

• Power out
• 60 W (undistorted)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Motional Feedback Box 567 Electronic 22AH567 /80R /89R - Philips; Eindhoven tubes

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 330 x 540 x 273 inch / 8382 x 13716 x 6934 mm

• Notes

• This Motional Feedback (MFB) system speaker box is equipped with an amplifier and features a motion sensor on the bass speaker which signals feedback into the amplifier to reduce the distortion produced by that speaker.

  Speaker chassis:

  • AD10100/MFB4 - 254 mm woofer
  • AD0211/SQ8 - 50 mm mid range, dome type
  • AD0163/T8 - 25 mm tweeter, dome type

  Max. sound pressure level at 1 m distance: 107 dB

  Versions:

  • /80R has 220 volts mains only
  • /89R has switchable mains

  See also 22AH567 /00R which uses different mid-range and tweeter chassis and has minor schematic differences.

  Semiconductors listed once per type.

• Net weight (2.2 lb = 1 kg)
• 19.5 kg / 42 lb 15.2 oz (42.952 lb)

• Mentioned in
• HiFi Jahrbuch 9 (1978) S.10-292, Verlag G.Braun Karlsruhe

• Literature/Schematics (1)
• - - Manufacturers Literature (Philips technisch tijdschrift)

• Literature/Schematics (2)
• -- Original-techn. papers.

• Author
• Model page created by Pieter Kralt. See "Data change" for further contributors.

• Other Models

• Here you find 5246 models, 4389 with images and 3447 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt