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- Q1566369 subject Q7149712.
- Q1566369 abstract "Motional Feedback (MFB) is the name of an active high fidelity loudspeaker system which was developed by the Dutch Philips brand in the early 1970s. The loudspeakers had built-in amplifiers and featured a revolutionary feedback sensor on the woofer. The sensor measured the output signal of the woofer and compared it to the amplifier input signal. This resulted in a very low distortion and furthermore a more extended low frequency response in a relatively small enclosure. Any distortion induced by the enclosure or the woofer itself is immediately corrected by the feedback loop. To a degree, the sensor/feedback system also compensates for non-optimal room acoustics.Although the Motional Feedback technology had been experimented with for several years, Philips was the first company to successfully create a working prototype and create a commercial product line of loudspeakers and equipment. Product Manager of the Philips High Fidelity group, Piet Gouw, was responsible for the launch of most of the Motional Feedback loudspeakers and other High Fidelity equipment. Even today, at the age of 86, Piet is an active member of MFBfreaks.com, the home of Motional Feedback collectors. He shares historical stories and answers questions on the MFBfreaks.com forum.Even today, Motional Feedback is used by High End audio designers. It is said that Tentlabs owner Guido Tent has recently designed an active subwoofer which uses Motional Feedback technology.".
- Q1566369 wikiPageExternalLink MFB.htm.
- Q1566369 wikiPageExternalLink www.mfbfreaks.com.
- Q1566369 wikiPageExternalLink www.mfbfreaks.nl.
- Q1566369 wikiPageWikiLink Q11016.
- Q1566369 wikiPageWikiLink Q1324405.
- Q1566369 wikiPageWikiLink Q1347355.
- Q1566369 wikiPageWikiLink Q15190726.
- Q1566369 wikiPageWikiLink Q168210.
- Q1566369 wikiPageWikiLink Q170416.
- Q1566369 wikiPageWikiLink Q183635.
- Q1566369 wikiPageWikiLink Q207977.
- Q1566369 wikiPageWikiLink Q208165.
- Q1566369 wikiPageWikiLink Q2501541.
- Q1566369 wikiPageWikiLink Q26674.
- Q1566369 wikiPageWikiLink Q27094.
- Q1566369 wikiPageWikiLink Q5322166.
- Q1566369 wikiPageWikiLink Q565720.
- Q1566369 wikiPageWikiLink Q570.
- Q1566369 wikiPageWikiLink Q7149712.
- Q1566369 wikiPageWikiLink Q770289.
- Q1566369 wikiPageWikiLink Q783794.
- Q1566369 wikiPageWikiLink Q949715.
- Q1566369 comment "Motional Feedback (MFB) is the name of an active high fidelity loudspeaker system which was developed by the Dutch Philips brand in the early 1970s. The loudspeakers had built-in amplifiers and featured a revolutionary feedback sensor on the woofer. The sensor measured the output signal of the woofer and compared it to the amplifier input signal. This resulted in a very low distortion and furthermore a more extended low frequency response in a relatively small enclosure.".
- Q1566369 label "Motional Feedback".
- Q1566369 homepage www.mfbfreaks.com.