subwoofer

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subwoofer

[′səb‚wu̇f·ər]
(engineering acoustics)
A loudspeaker designed to reproduce extremely low audio frequencies, extending into the infrasonic range, generally used in conjunction with a crossover network, a woofer, and a tweeter.

subwoofer

A speaker that reproduces the lower end of the audio spectrum. A subwoofer system typically includes a crossover circuit that filters frequencies around 100Hz and under to the driver. In a home theater, the placement of front, center and surround speakers is critical to the listener, but subwoofers are non-directional and can be located in a convenient spot, although corners are not recommended.

Passive and Active Subwoofers
Passive subwoofers contain only the speaker (the driver) and crossover. Active subwoofers are self powered and include their own amplifier. See woofer.
References in periodicals archive ?
Powered subwoofers have their own built-in amplifiers and do not depend on any limitations of external receiver or amplifier, which makes them very easy to use with home theatre receivers.
Our JBL subwoofers are engineered to fit the unique audio characteristics of vehicles while giving consumers pricing flexibility and choice, and building brand loyalty.
Matching subwoofer with high rated and peak power handling
Amplifiers: Cerwin-Vega Mobile subwoofers have gained acclaim for their legendary combination of high output and ridiculous power handling.
Note that the filter has stereo inputs and outputs, which means that if Y connectors are involved it cannot work with subwoofers like the low-priced Hsu STF-1 or STF-2 that have only a mono input jack.
For clean and powerful bass reproduction, Pioneer offers a new line of Champion series subwoofers consisting of the TS-W260S4 (10-inch), TS-W260D4 (10-inch), TS-W310S4 (12-inch) and TS-W310D4 (12-inch).
HARMAN, the premium global audio, visual, infotainment and enterprise automation group, introduced today at CES 2015 the Infinity BassLink SM, the latest subwoofer in the BassLink line.
Smallish (but not too small) satellites, working in combination with a good subwoofer, have the potential let the listener have their cake and eat it too, so to speak.
The 2011 Champion Subwoofers feature a new IMPP Composite Seamless Cone and Dual-layer Elastic Polymer Surround for deep, powerful and controlled bass.
For example, a situation where you have two spaced woofers or subwoofers 12 feet apart or another situation where you have one woofer or subwoofer 6 feet from a large boundary will each generate a suckout notch centered at 56.
A long-excursion 4" powered subwoofer in a tuned enclosure reproduces accurate low frequencies down to 48 Hz (ZVOX 430) or 43 Hz (ZVOX 440)
It's no wonder that DAR finds subwoofers to be as much a problem as an aid in a music system.