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Larry Greenhill Posted: Jan 12, 2008 0 comments
Paul Barton, founder and chief designer of PSB Speakers International, plans to manufacture a new series of loudspeakers he is calling "Imagine." This line will feature new finishes and styling. The enclosures will be curved, both front to back and top to bottom. To create this shape, PSB is laminating multiple layers of MDF, w2hich is then braced to a mold. Radio frequency waves are directed at the enclosure shell for 15 seconds that quickly sets the glue. Once the enclosure is stable, holes are machined as the exact places required, which eliminates the tedious job of making ultra-precise adjustments when an enclosure is built around the drivers. PSB also uses a method of adding color after the first coat of clear sealant is applied to the veneer, so the resulting finish shows the wood grain but also has a rich, red color.
Larry Greenhill Posted: Nov 30, 2002 0 comments
I first heard Eugene Gigout's pipe-organ masterpiece, the Grand Chorus in Dialogue, in the Smetana Concert Hall of Prague's Municipal House (Obecnim Dome) on a Saturday evening before the 2002 flood. I recall seeing the delicate, youthful Michele Hradecka sway from side to side to reach the pedals. In response, a massive wall of deep organ chords shook the hall, the magical acoustic blending the delicate, extended highs with the thunderous bass. But this memory mixed the music with the beauty of Prague's soaring church spires, brilliant red terracotta roofs, and lavish palaces.
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Larry Greenhill Posted: Jan 16, 2012 0 comments
Sumiko teamed up a pair of Sonus Faber Amati Futura floorstanding speakers — watch for JA's review in the March 2012 issue—with the $4500 REL Gibraltar G1 subwoofer to produce explosive, massive, but tightly controlled bass while playing the "Chinese Drum Poem" selection from disc 3 of the Burmester Demonstration Disc series. The REL G1 is a 108 lb, closed-box, front-firing 12" driver driven by a 600W, high-current amplifier. Sumiko's John Hunter set the gain of the G1 using a small remote. The G1 subwoofer fell totally silent when the music was free of deep bass content, as it should.
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Larry Greenhill Posted: Oct 26, 2004 Published: Oct 01, 2004 1 comments
Makers of powered subwoofers fall into two camps: those that fit a high-powered amplifier and a single, large woofer into a relatively small, unobtrusive enclosure; and those that build two or more 10" woofers and an amp of moderate power into a larger, heavier enclosure.
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Larry Greenhill Posted: Jan 16, 2013 1 comments
At this year's CES, Sumiko's John-Paul Lizars introduced me to REL Acoustics’ new R528 SE sub-bass system. He described it as an "ultra-high output version of the R528" but also as a more compact version of the company's flagship Gibraltar 1 subwoofer. The R528 SE is half the weight (58 lbs instead of 108 lbs), 43% of the volume, and 61% of the cost of the G1 ($2750 instead of $4499). While the larger G1 has a 600W class-AB amplifier, the R528 SE has a 500W class-D amplifier. Both subwoofers utilize REL's aluminum-chassis, 12", carbon-fiber–cone woofer, but the R528 SE adds a downward-firing 12" passive radiator. Low-frequency response are not that different, with the R528 SE's –6dB point at 21Hz, and the Gibraltar 1's 15Hz. Many audiophiles and home-theater fans may end up favoring the more compact new subwoofer.
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Larry Greenhill Posted: Jan 09, 2008 2 comments
"I don't recall seeing your flagship, $45,000/pair, Nautilus loudspeaker recently at a show," I mentioned to Scott Rundle, US Sales Manager for British manufacturer Bowers and Wilkins.
Larry Greenhill Posted: Mar 28, 1999 4 comments
On a very special Saturday night in early September—late winter in Australia—I was deeply moved by hearing Brahms' Symphony 1 in the concert hall of the Sydney Opera House complex. Perhaps it was Marek Janowski's fiery, inspired conducting, but I keep recalling the hall itself. Earlier that day, I had photographed—first from my hotel room, later from a ferry—the huge, nesting sail-like roofs, covered with a million white ceramic tiles, that enclose an opera theater, concert hall, and restaurant. Twenty-five years in construction and costing over $107 million, the Sydney Opera House is described in my Fodor's '98 Australia guide as "the most widely recognized landmark of urban Australia." Attending the concert that night—all 2679 seats were occupied—I found the acoustics lovely, dark, and rich.
Larry Greenhill Posted: Feb 12, 2015 0 comments
Powerful, massive, and expensive, Revel's Ultima Rhythm2 subwoofer ($10,000) swept me off my feet when I first saw it in Harman International's suite at the 2013 Consumer Electronics Show. It outsizes, by 49 lbs and 2.6 cubic feet, Revel's previous flagship model, the Ultima Sub30, which I reviewed in the November 2004 issue. Its specs read like no other sub's: 196 lbs; 18" cast-frame woofer; dual 4" voice-coils; 4kW peak power from twin internal amplifiers that generate 1kW RMS; 115dB peak acoustic output; a fully configurable, high-resolution, 10-band parametric equalizer (PEQ); an internal crossover with high- and low-pass outputs; and PC-based setup via USB. The Rhythm2's patent-pending design is said to let just enough air move in and out of the cabinet to prevent any distortion-inducing pressure due to heating of the voice-coils. And its veneer, shape, beveled top edges, and bottom plinth exude the quality found in Revel's top-of-the-line floorstanding speaker, the Ultima Salon2, with which I was familiar.
Larry Greenhill Posted: Jun 17, 2008 0 comments
Back in March 1998, Revel's Ultima Salon1 floorstanding loudspeaker generated quite a stir at Stereophile (Vol.22 No.3). Our reviewers were impressed by its seven designed-from-scratch drive-units, its ultramodern enclosure with curved rosewood side panels, exposed front tweeter and midrange, rear-facing reflex port and tweeter, and a flying grille over the mid-woofer and woofers. In the December issue (Vol.22 No.12), the Ultima Salon1 ($16,000/pair) was named Stereophile's "Joint Speaker of 1999" for its "big bass, timbral accuracy, low distortion, dynamics, lack of compression, and best fit'n'finish."
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Larry Greenhill Posted: Dec 12, 2004 Published: Nov 12, 2004 0 comments
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 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 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.


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