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2. JL Audio - Wikipedia

   en.wikipedia.org/wiki/JL_Audio

   Two 10 inch JL Audio sub-woofers. Original "W0" series in JL Audio PowerWedge box. PowerWedges: Compact, enclosed full-range speaker systems made by JL Audio in the early 1980s. One of the first enclosed speaker systems ever in the car audio market. 8W2: Eight-inch woofer for use in the new line of JL Audio PowerWedges. Following that design ...

3. Subwoofer - Wikipedia

   en.wikipedia.org/wiki/Subwoofer

   Subwoofer. 12-inch (30 cm) subwoofer driver (loudspeaker). A driver is commonly installed in an enclosure (often a wooden cabinet) to prevent the sound waves coming off the back of the driver diaphragm from canceling out the sound waves being generated from the front of the subwoofer.

4. Loudspeaker enclosure - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker_enclosure

   Below the bottom woofer is a bass reflex port. A loudspeaker enclosure or loudspeaker cabinet is an enclosure (often rectangular box-shaped) in which speaker drivers (e.g., loudspeakers and tweeters) and associated electronic hardware, such as crossover circuits and, in some cases, power amplifiers, are mounted.

5. Passive radiator (speaker) - Wikipedia

   en.wikipedia.org/wiki/Passive_radiator_(speaker)

   A speaker enclosure using a passive radiator usually contains an "active loudspeaker " (or main driver), and a passive radiator (also known as a "drone cone"). The active loudspeaker is a normal driver, and the passive radiator is of similar construction, but without a voice coil and magnet assembly. It is not attached to a voice coil or wired ...

6. Acoustic suspension - Wikipedia

   en.wikipedia.org/wiki/Acoustic_suspension

   Acoustic suspension. An acoustic suspension loudspeaker is a type of speaker enclosure in which a loudspeaker driver is mounted in a cabinet with a closed back and no ports or vents. Acoustic suspension is a loudspeaker cabinet design that uses one or more loudspeaker drivers mounted in a sealed box. Acoustic suspension systems reduce bass ...

7. Rotary woofer - Wikipedia

   en.wikipedia.org/wiki/Rotary_woofer

   Rotary woofer. 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 (angle) of the blades of an impeller rotating at a constant speed. The pitch of the fan blades is controlled by the audio signal presented to the voice coil, and is ...