For example, the S3-BT's woofer employs a proprietary anti-resonance cone and powerful magnet assembly.
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An on-board limiter protects the woofer's driver being over-powered and maintains clean and undistorted sound, at any output level.
"BassBatteryTM" Technology turns the battery into a woofer for smoother deeper bass.
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The AVR 3700 adds WiFi connectivity, and has 7.2 channels (at 125 watts per channel) for adding a second woofer to your setup.
Philips SoundSphere speakers have a uniquely positioned tweeter and woofer with rigorous audio crossover engineering that minimizes interference and produces a more natural sound.
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Each speaker in this system has a tweeter, woofer and four-inch passive bass radiator on the back that moves a surprising amount of air.
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The stereo unit is built around a two-way system featuring a soft dome tweeter and a powerful compact woofer loaded by a passive radiator, for each channel.
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Two thick birch partitions and a small air cavity create a well-insulated enclosure inside the cabinet, separating the midrange and tweeter from the woofers, further isolating woofer back-radiation.
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Perhaps a bigger obstacle is French composers' reputation for writing music that is too thin, too light and too much in the head: all tweeter, so to speak, and no woofer.
The front panel houses a duo full-range three-inch drivers, a 6.5-inch woofer (all custom tuned, aimed at delivering neutral, transparent output in terms of EQ) and a controller box, each of which are held in with butterfly screws.
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Specs were a bit thin but we do know it's made up of thousands of blue lights, oversized knobs and the speaker cabinet contains four speakers powered by three separate amps -- the bottom speaker being a huge 15" "Ultra Super Woofer.
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Tri-Amping - A technique commonly used in large-scale sound amplification for concerts, Tri-amping is the practice of connecting three audio amplifiers to a loudspeaker unit: one to power the bass driver (woofer), one to power the mid-range and the third to power the treble driver (tweeter).
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