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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
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References in periodicals archive ?
In the centre you have the USB port, subwoofer pairing button and a wall mounted/table top placement toggle.
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.
Medium is only a little harder: connect the (supplied) calibrated mic, put it in your preferred listening position, and punch a code into the remote control to do an Auto EQ that attempts to mate the subwoofer to your satellites and to correct for room anomalies between 15 and 200 Hz.
The subwoofer is powered by 19 watts for deep, rich bass and features a 5 1/4" Max-X high-excursion driver to move more air and produce outstanding bass response, optimal dynamic range and improved bass.
SoundMan X1, which combines a subwoofer and satellite speakers, carries an estimated retail price of $69.
The RP2503 mini audio system, priced at $249.99, is a five-disc- changing audio system, much like the RS2507, except it doesn't have the built-in subwoofers.
It has appealed to consumers who want the simplicity and affordability that comes with a combination receiver with built-in amplifiers, surround-sound, satellite speakers, powered subwoofer and remote control.
When I started getting into home theater, research led me to making my first "real" audio purchase: a subwoofer. After reading tons of reviews and analyzing performance specs, I drove to a boutique store in San Francisco and bought a big, fat, 15-inch driver model that could rattle windows and vibrate furniture.
A good subwoofer will bring the bottom octave of your music back into proper balance, so you'll hear familiar tunes in a whole new light.
With the announcement of this partnership, Cerwin Vega's internationally popular range of subwoofers, amplifiers and speakers will be available for retail online at Carkhana.com