Subwoofer Reviews

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Revel Ultima Sub 30 powered subwoofer

It didn't seem like such a big deal. After all, when designer Kevin Voecks added a passive radiator to the bottom of Revel Loudspeakers' powerful Ultima">http://www.stereophile.com/loudspeakerreviews/90">Ultima Sub 15 subwoofer, no one expected that the resulting 6dB increase in bass output below 35Hz would be so audible. However, Revel's sophisticated double-blind listening tests (described in my review of their flagship Ultima">http://www.stereophile.com/loudspeakerreviews/96">Ultima Salon full-range loudspeaker in the March 1999 Stereophile, revealed that a big change had occurred. With now twice the radiating surface, the modified Sub 15 produced significantly deeper, more powerful bass.


MartinLogan Depth powered subwoofer

"You certainly love weird music!" my wife yelled from the kitchen. This just reconfirmed my suspicion that reviewing subwoofers is a lonely job that brings no respect. What's so weird about the droning of Tibetan temple horns accompanied by the chants of Tibetan Gyuto monks, all framed by a powerful synthesizer in Philip Glass's soundtrack to Kundun (CD, Nonesuch 79460-2)? What's so strange about the karate-like cries of the drummers in the Kromata Percussion ensemble as they smash away at their timpani and gongs in Yoshihisa Taira's Hierophonie V (CD, BIS CD-232)? What's so odd about the shuddering majesty of 25Hz notes played by Harry Partch's one-of-a-kind Eroica Marimba, heard on his Delusion of the Fury (LP, Columbia M2 30576)? Why would any spouse object to the primitive, driving synthesizer growls and screams from Morton Subotnick's The Wild Bull (LP, Nonesuch H-71208)?


Velodyne Digital Drive DD-18 powered subwoofer

It's common to read ads for new audio hardware that crow about "revolutionary" breakthroughs in sound performance, and that's how Velodyne crowed about their new Digital Drive DD-18, servo-controlled, powered 18" subwoofer. The ads suggested that the DD-18 can be digitally equalized to one's room with a resultant in-room frequency response of 20-200Hz, ±3dB.


REL Acoustics Studio II powered subwoofer

From The Audio Catechism:
Q: What is a subwoofer?
A: A large, ugly device that must be placed in the most inconvenient location in the listening room—for instance, in front of the only door.
Q: What is the purpose of the subwoofer?
A: To produce prodigious amounts of low-frequency sound and to glorify its owner, who can rest safe in the knowledge that his is the biggest.


Gradient SW-57 subwoofer

There are two kinds of audiophiles: those who own original Quad ESL speakers and those who don't (footnote 1). This review is for the former, although the latter may find it of some interest. The Gradient SW-57 subwoofer attempts to do for the original Quad (footnote 2) what Gradient's SW-63 (footnote 3) does for the Quad ESL-63: supply the bottom octave while relieving the ESLs of the strain of reproducing low bass.


Muse Model 18 subwoofer

I should begin this review by confessing that I've never been a fan of subwoofers. Most subwoofer systems I've heard have been plagued by a familiar litany of sonic horrors: poor integration between subwoofer and main speakers, boom, bloat, tubbiness, slowness, excessive LF output, and an overall presentation that constantly reminds the listener he is hearing a big cone moving. To me, subwoofers often sound detached from the music, providing an accompanying thump that bears little relationship to the sound from the main speakers. Rather than revealing the music's harmonic underpinnings, subwoofers often obscure them in a thick morass of featureless boom. In addition, adding a subwoofer often destroys the qualities of the main speakers that made you buy them in the first place—just to name a few of my observations (footnote 1).


Other than that, I like subwoofers.

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