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frequency can increase system output without generating extraneous noises or greatly increasing cone excursion of the active driver. Many wOOx-equipped mini-stereo systems produced by
Philips feature a three-level equalization control which applies additional bass equalization at frequencies which excite the wOOx bass radiator, improving the visceral 'impact' of the bass through the wOOx radiator's extreme air displacement capability. This use of active equalization to increase overall system output is the primary characteristic that differentiates wOOx technology from typical loudspeaker systems equipped with passive radiators.
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driver (these include bass-reflex systems, passive radiator systems, bandpass systems, and transmission-line systems), the resonant system absorbs the acoustic load from the active loudspeaker driver, decreasing the necessary cone excursion to achieve high output at low frequencies. However, it is advantageous to have a loudspeaker driver with a strong magnetic structure for high electrical damping of the driver cone. This supplies the maximum possible force to the loudspeaker cone and creates the maximum possible excitation of the resonant system.
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possible, to keep the excursion of the active driver at a minimum while maximizing the output of the loudspeaker system. Thus it is desirable to employ a more powerful magnetic structure. To protect the moving structure of the active driver from potential over excursion, the driver is designed with a higher degree of mechanical excursion capability.
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The dual-suspension design of the wOOx bass radiator allows the radiator to undergo extreme excursions, so the wOOx radiator displaces the necessary air volume without being larger than the active driver, enabling easier integration into consumer electronics products. More recent embodiments of the wOOx bass radiator use a single-roll suspension.
369:' own use of wOOx Technology, the technology also appeared in products sold by Kenwood and Microsoft. Also, some Philips products display "wOOx²" branding, though apparently without a fundamental change to the wOOx system. The only likely difference between wOOx and wOOx² is in the amount of active equalization applied to the system.
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Typical passive radiator theory dictates that the passive radiator should be capable of displacing at least twice the volume of air that the active driver displaces through its own stroke. To satisfy this requirement, passive radiators traditionally have a larger surface area than the active driver.
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The same is true for systems that use wOOx technology, in which the wOOx radiator absorbs the acoustic load from the active driver. Because the wOOx radiator is capable of greater excursion than the active driver without increasing distortion, it is desirable to excite the wOOx radiator as much as
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In a loudspeaker system incorporating passive diaphragms, the term 'active driver' refers to the loudspeaker driver with the voice coil, to distinguish it from the 'passive' diaphragms which have no voice coil. In loudspeaker systems that rely on resonant augmentation of the output of the active
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ports) more commonly used to tune loudspeaker enclosures. However, the amount of mass suspended on a passive radiator diaphragm enables extremely deep tuning frequencies to be possible in small enclosures. However, like any passive radiator system, it is possible to damage the bass radiator by
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One benefit of the wOOx bass radiator (and passive radiators in general) when compared to the more common bass-reflex vents is that there is no possibility of air turbulence noise if the resonant system is greatly excited. As a result, additional equalization applied near the enclosure tuning
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The primary element of a wOOx
Technology speaker system is the bass radiator. The wOOx bass radiator (referred to in marketing literature as the wOOx-Slave) is functionally indistinguishable from the typical "passive radiator" diaphragms previously employed in loudspeaker systems. Early wOOx
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The wOOx radiator incorporates a mass element in the center of its diaphragm, which is used to adjust the tuning frequency of the loudspeaker enclosure. In this sense, a loudspeaker enclosure with passive radiators emulates a mass-spring system, much like the
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Developed by
Philips, is designed to enhance bass reproduction in audio systems, providing richer and deeper sound. It achieves this through a combination of advanced speaker design and digital signal processing to deliver an improved listening experience.
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driving it beyond its mechanical limits. To avoid this, some wOOx systems use an additional reflex vent, having the same tuning as the wOOx radiator. This relieves excess pressure that could tear the bass radiator apart.
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technology along with active equalisation to maximize the output of the passive diaphragm. wOOx
Technology optimizes the active bass driver, the passive bass radiator, and the active equalisation curve to obtain maximum
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radiators used a patented design with two foam-rubber suspension rings instead of the typical single ring, and a symmetrical sandwich construction.
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This is a list of products which feature wOOx
Technology, though it is not exhaustive. Not all of these products were sold in the U.S. market.
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A common marketing slogan used by
Philips for products with wOOx Technology is "Hear the bass, feel the difference".
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reproduction in a relatively compact configuration.
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530:Volvo Loudspeaker kit HT-540/640 (for Volvo V40)
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524:Kenwood KSC-WA62RC Powered Automotive Subwoofer
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533:Volvo Loudspeaker kit HT-V41 (for Volvo V40)
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50:Learn how and when to remove these messages
163:reliable, independent, third-party sources
269:Learn how and when to remove this message
251:Learn how and when to remove this message
181:Learn how and when to remove this message
111:Learn how and when to remove this message
157:by replacing them with more appropriate
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140:too closely associated with the subject
552:AJ300D iPod/GoGear Docking Clock Radio
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514:Products From Other Manufacturers
31:This article has multiple issues.
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527:Kenwood NV 301 Executive System
39:or discuss these issues on the
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632:Consumer electronics brands
379:Executive and Shelf Systems
339:Design of the Active Driver
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549:MMS306 PC speaker system
546:MMS305 PC speaker system
206:This article includes a
235:more precise citations.
490:AZ2558 CD Soundmachine
487:AZ2555 CD Soundmachine
482:Portable Music Systems
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305:The wOOx Bass Radiator
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93:neutral point of view
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495:Televisions
332:bass reflex
233:introducing
621:Categories
580:2024-06-26
557:References
155:improve it
145:verifiable
81:improve it
36:improve it
330:devices (
159:citations
42:talk page
477:LX8300SA
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575:Philips
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367:Philips
286:Philips
229:improve
149:neutral
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