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- Rotary_woofer abstract "A rotary woofer is a subwoofer-style loudspeaker which reproduces very low frequency content by using a conventional speaker voice coil's motion to change the pitch of a set of fan blades rotating at a constant speed. The pitch of the fan blades is controlled by the audio signal presented to the voice coil, and is able to swing both positive and negative, with respect to a zero pitch spinning blade position. Since the audio amplifier only changes the pitch of the blades, it takes much less power, per dB of generated acoustic sound level, to drive a rotary woofer than to power a conventional subwoofer, which uses a moving electromagnet (voice coil) placed within the field of a stationary permanent magnet to drive a cone which then displaces air. Rotary woofers excel at producing sounds below 20 Hz, below the normal hearing range; when installed in the wall of a sealed room, they can produce audio frequencies down to zero Hz, a static pressure differential, by basically just compressing the air in the sealed room.".
- Rotary_woofer wikiPageExternalLink bassment.wordpress.com.
- Rotary_woofer wikiPageExternalLink GetabsServlet?prog=normal&id=JASMAN000055000004000814000001&idtype=cvips&gifs=yes.
- Rotary_woofer wikiPageExternalLink search=%22Thresholds%20of%20audibility%20for%20very%20low-frequency%20pure%20tones%22.
- Rotary_woofer wikiPageExternalLink page142.html.
- Rotary_woofer wikiPageExternalLink 02030000.htm.
- Rotary_woofer wikiPageExternalLink www.rotarywoofer.com.
- Rotary_woofer wikiPageID "7140575".
- Rotary_woofer wikiPageLength "6637".
- Rotary_woofer wikiPageOutDegree "20".
- Rotary_woofer wikiPageRevisionID "636512586".
- Rotary_woofer wikiPageWikiLink Absolute_threshold_of_hearing.
- Rotary_woofer wikiPageWikiLink Acoustical_Society_of_America.
- Rotary_woofer wikiPageWikiLink Audio_amplifier.
- Rotary_woofer wikiPageWikiLink Audio_frequencies.
- Rotary_woofer wikiPageWikiLink Audio_frequency.
- Rotary_woofer wikiPageWikiLink Audio_power_amplifier.
- Rotary_woofer wikiPageWikiLink Category:Loudspeakers.
- Rotary_woofer wikiPageWikiLink Civil_defense_siren.
- Rotary_woofer wikiPageWikiLink Decibel.
- Rotary_woofer wikiPageWikiLink Earphone.
- Rotary_woofer wikiPageWikiLink Eminent_Technology.
- Rotary_woofer wikiPageWikiLink Frequency_band.
- Rotary_woofer wikiPageWikiLink Frequency_range.
- Rotary_woofer wikiPageWikiLink Headphones.
- Rotary_woofer wikiPageWikiLink Hearing_threshold.
- Rotary_woofer wikiPageWikiLink Infrasound.
- Rotary_woofer wikiPageWikiLink Magnet.
- Rotary_woofer wikiPageWikiLink Permanent_magnet.
- Rotary_woofer wikiPageWikiLink Sound_intensity.
- Rotary_woofer wikiPageWikiLink Sound_intensity_level.
- Rotary_woofer wikiPageWikiLink Sound_pressure.
- Rotary_woofer wikiPageWikiLink Sound_pressure_level.
- Rotary_woofer wikiPageWikiLink Subwoofer.
- Rotary_woofer wikiPageWikiLink Swashplate_(aeronautics).
- Rotary_woofer wikiPageWikiLink Swashplate_(helicopter).
- Rotary_woofer wikiPageWikiLink Table_Rock_Center.
- Rotary_woofer wikiPageWikiLink Table_Rock_Welcome_Centre.
- Rotary_woofer wikiPageWikiLink Voice_coil.
- Rotary_woofer wikiPageWikiLinkText "Rotary woofer".
- Rotary_woofer wikiPageWikiLinkText "rotary woofer".
- Rotary_woofer hasPhotoCollection Rotary_woofer.
- Rotary_woofer wikiPageUsesTemplate Template:Dk_icon.
- Rotary_woofer wikiPageUsesTemplate Template:Quote.
- Rotary_woofer wikiPageUsesTemplate Template:Refimprove.
- Rotary_woofer wikiPageUsesTemplate Template:Reflist.
- Rotary_woofer subject Category:Loudspeakers.
- Rotary_woofer hypernym Loudspeaker.
- Rotary_woofer type Article.
- Rotary_woofer type Company.
- Rotary_woofer type Article.
- Rotary_woofer type Motor.
- Rotary_woofer comment "A rotary woofer is a subwoofer-style loudspeaker which reproduces very low frequency content by using a conventional speaker voice coil's motion to change the pitch of a set of fan blades rotating at a constant speed. The pitch of the fan blades is controlled by the audio signal presented to the voice coil, and is able to swing both positive and negative, with respect to a zero pitch spinning blade position.".
- Rotary_woofer label "Rotary woofer".
- Rotary_woofer sameAs m.0h6cmh.
- Rotary_woofer sameAs Q7370285.
- Rotary_woofer sameAs Q7370285.
- Rotary_woofer wasDerivedFrom Rotary_woofer?oldid=636512586.
- Rotary_woofer isPrimaryTopicOf Rotary_woofer.