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W7: JL's top-of-the-line subwoofer featuring six now expired, patented technologies. Available in 8-inch, 10-inch, 12-inch, and 13.5-inch woofer sizes. TW5: JL's only shallow mount subwoofer and only available in 13.5-inch. The mounting depth is a mere 2.54 inches.
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.
Isobaric loudspeaker in a cone-to-magnet (in-phase) arrangement. The image above shows a sealed enclosure; vented enclosures may also use the isobaric scheme. Two identical loudspeakers are coupled to work together as one unit: they are mounted one behind the other in a casing to define a sealed chamber of air in between them. The volume of ...
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 ...
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.
A passive crossover circuit is often mounted in a speaker enclosure to split up the amplified signal into a lower-frequency signal range and a higher-frequency signal range. A passive crossover splits up an audio signal after it is amplified by a single power amplifier , so that the amplified signal can be sent to two or more driver types, each ...
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