Thomas J. Norton

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Thomas J. Norton  |  Dec 07, 2009  |  First Published: Jan 07, 1991  |  0 comments
The face was different, but the look was familiar. It should have been. The $2395 Aria Mk.III is a close cousin to the Aria II that I'd hung around with for about two years. Same sense of style, same heart of tubes. CAL Audio apparently made it what it is today, from the ground up. They even designed its transport and transport-drive circuitry in-house (footnote 1). In a high-end world which has gone increasingly to separate digital processors, CAL has been, up till now, a conspicuous holdout. They've only recently introduced their first outboard converter, and have in the past argued in favor of the all-in-one player. Something about reduced jitter from all the timing circuits being under one roof.
Thomas J. Norton  |  Oct 20, 2016  |  First Published: Jan 01, 1991  |  3 comments
With Sony's latest flagship single-box player ($1700), we find yet another variant on 1-bit D/A technology—High Density Linear Converter, or HDLC. At the heart of this Pulse Length Modulation (footnote 1) D/A technique is Sony's CXD-2552 Pulse D/A converter (two per channel in complementary mode in the CDP-X77ES). This complex LSI chip incorporates a third-order noise shaper, the PLM converter, and a digital sync circuit receiving its input from the system clock.
Thomas J. Norton  |  Nov 10, 2016  |  First Published: Jan 01, 1991  |  2 comments
Like its Prism I predecessor, which I reviewed in May 1988, the Mod Squad Prism II is based on a Philips player: the same 16-bit, 4x-oversampling converter, the same general control layout. But The Mod Squad does their own extensive remanufacture, both on the internal circuitry and on the cosmetics—the latter involving a handsomely sculptured case and metal front trim-panel surrounding Philips's command center.
Thomas J. Norton  |  Feb 07, 2017  |  First Published: Jan 01, 1991  |  3 comments
The $499 NAD 5000 looks nothing like most inexpensive CD players. Its plastic trim doesn't look cheap. It doesn't look expensive either, but it certainly won't be embarrassed to show its face in polite company. The front panel is neatly arranged and easy to interpret and use. It's the smallest and lightest of the present company of players—the only obvious physical reflections of its low-budget heritage. Inside, however, NAD has done a lot to put your money where it counts.
Thomas J. Norton  |  Oct 07, 2007  |  First Published: Dec 07, 1990  |  0 comments
"Tomorrow we'll go over to Larry Archibald's house and pick up the Threshold amplifiers."
Thomas J. Norton  |  May 28, 2006  |  First Published: Nov 28, 1990  |  0 comments
It may surprise some readers to learn that all of the contributors to Stereophile do not get the chance to hear, at our leisure and in familiar circumstances, everything that passes through the magazine's portals. Not that we wouldn't like to, but there just isn't time. Nor are the logistics always right. I was therefore probably as intrigued as the average reader by LA's glowing report on the $5000/pair Mirage M-1 in the June 1989 issue. The M-1s had been on the market long enough for me to have heard them on several occasions, of course, but generally at shows and not under the best of conditions. I did get to hear them briefly at LA's later that same summer, but the hustle and bustle of a Stereophile Writers' Conference party isn't the optimum place for value judgments.
Thomas J. Norton  |  Apr 13, 2016  |  First Published: Oct 01, 1990  |  1 comments
Audio journalists tend to wander the corridors of a CES in a minor state of shell-shock. There are no carnival-barkers outside the rooms enticing one to enter (not yet, at any rate), but the sounds and reputations oozing from the open doorways yield little to the "hurry, hurry, hurry" crowd. The Signet room has always, it seems, been one of the quieter oases, often eschewing sound altogether while contentedly displaying their phono cartridges, cables, and various accessories. On a recent CES hunt, I was therefore intrigued to find them demonstrating two new loudspeakers, of all things, to the milling throngs.
Paul Bolin, Thomas J. Norton  |  Jul 26, 2003  |  First Published: Jul 26, 1990  |  0 comments
"Which way to the four o'clock tour?" It was already 10 minutes past the hour. I was late, but this was the last tour of the day. It would be a very long wait for the next one.
Thomas J. Norton  |  Dec 11, 2015  |  First Published: Jul 01, 1990  |  12 comments
In their seminal work on the subject of audio "Bluff your Way in Hi-Fi" (1987), Sue Hudson and John Crabbe stated that "the perfect speaker would have no mass and no dimensions. The perfect speaker does not exist, and if it did, it still wouldn't." One might add, as a corollary, that a speaker with zero dimensions would also have infinite cost. At least there seems to be a trend in that direction. The Wilson WATT and Celestion SL700—to use today's two most visible examples—may have attracted considerable attention because of their exceptional performance, but they have also attracted at least as much because of their price/size ratio. Even in a considerably "lower" price bracket, a "simple" two-way loudspeaker with a 6" or 7" woofer costing $1000–$2000/pair would, at one time, have had most audiophiles laughing themselves silly.
Robert Harley, Thomas J. Norton  |  Jul 15, 2016  |  First Published: Apr 01, 1990  |  0 comments
The DQ-12 is the latest loudspeaker from Dahlquist employing their "Phased Array" technology, first used in 1973. The company was formed that year by Jon Dahlquist and Saul Marantz to produce the DQ-10, a loudspeaker that enjoyed a long and successful life. When I sold hi-fi in a retail store in the late 1970s—we stocked Dahlquist speakers—the DQ-10 was among the more prominent audiophile speakers, prized for its imaging abilities.

In 1976, Carl Marchisotto joined the company, designing support products for the DQ-10 including a subwoofer, variable low-pass filter, and a passive crossover. Jon Dahlquist is no longer actively involved with the company; Carl has now assumed the engineering responsibilities at Dahlquist and is the designer of the latest group of Phased Array loudspeakers (footnote 1). This new line, introduced at the Winter 1990 CES in Las Vegas, encompasses three models: the $850/pair DQ-8, the DQ-12 reviewed here, and the $2000/pair flagship, the DQ-20i.

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