Kalman Rubinson

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Kalman Rubinson  |  Apr 27, 2017  |  14 comments
Several years ago, at a Consumer Electronics Show, Bob Stuart, then with Meridian Audio, took John Atkinson and me into a private room to demonstrate something new. He played individual tracks of mostly familiar recordings, twice each: first, straight from the commercial release, and then again, this time after processing with technology he was still developing. The differences were subtle, but usually we favored the second version. It was all very hush-hush, and despite our requests for technical information, Stuart spoke of his new process only in terms of results—as a way to recover the original sound at the microphone by knowing and compensating for the transfer functions of that mike and the analog-to-digital converter originally used, as well as of the digital-to-analog converter used in playback. The process had no name, and there was no timetable for its commercial launch.
Kalman Rubinson  |  Jun 29, 2017  |  6 comments
It's been going on for a while now: Despite support for multichannel in audio/video receivers and A/V processors priced from as little as $200 to $30,000, there are still very few offerings that cater to the music listener. They may offer stereo-only streaming features through their USB or Ethernet inputs, but these inputs don't see your multichannel files. To handle such files, they would require you to add a music server with HDMI output. However, I know of no turnkey music servers that will output multichannel audio via HDMI.
Kalman Rubinson  |  Aug 31, 2017  |  7 comments
It's time to fulfill my promise to write about Playback Designs' Sonoma Syrah music server and Sonoma Merlot DAC. It all began when I asked Playback's founder and CEO, engineer Andreas Koch, when he plans to produce a multichannel digital-to-analog converter—a question I've put to so many other manufacturers. He said that he already had a multichannel system on the drawing board, and not just a DAC. Our e-mail exchange culminated in his announcement of the Playback Designs USB-XIII Digital Interface, to be used between a USB source component and as many as three DACs via PLink, Playback's proprietary fiber-optic connection.
Kalman Rubinson  |  Jan 02, 2005  |  First Published: Dec 02, 2004  |  0 comments
With the new power and furniture arrangements in my multichannel room, I've begun to reexamine all the other things that affect system performance, including power conditioning and signal cables. However, I could not get my wife to accept the presence in that room of an ASC Sub Trap, which lifted my Paradigm Servo-15 subwoofer to eye level. Not that I protested the Trap's departure all that much—at that height, Trap and sub partly blocked direct radiation from my rear left speaker. But I felt its absence immediately, as my system returned to the usual somewhat boomy, overly punchy bass. The ASC left me with the determination to deal with room problems, particularly in the bass.
Kalman Rubinson  |  Sep 17, 2006  |  4 comments
Quietly tucked at the back of the main hall, Musical Fidelity had a lot of new stuff of great audiophile interest. First off is the new "audio Swiss Army Knife," as JA referred to it in his blog yesterday, the all-in-one, $9000 kW250. But among the other goodies on the Signal Path booth was the X-Package, consisting of the neat little X-RAYv8 24/192 upsampling CD player, the X-T100 60Wpc tube hybrid integrated amp, and the Triple-X power supply which powers both as well as an optional external DAC, tuner, etc. In their compact but non-resonant aluminum casings, this $3000 system was surprisingly potent.
Kalman Rubinson  |  Oct 02, 2005  |  0 comments
In a press conference held September 28 at Sony Music Studios on West 54th Street, MusicGiants —see Wes Phillips' earlier story on this company—announced the launch of a new music download service that offers CD-resolution digital recordings from the major artists on the major music labels, EMI, Sony/BMG, Universal, and Warner.
Kalman Rubinson  |  Nov 24, 2008  |  First Published: Jun 01, 2001  |  0 comments
In my February 2000 review of Meridian's multi-talented, multichannel, multi-kilobuck Digital Theatre system, I fumed about the lack of a medium for discrete multichannel music. Even more loudly, I railed against the irresponsible mastering of many Dolby Digital and DTS discs, which place the listener in the middle of an ensemble and swirl the voices around his or her head with little concern for musical or artistic coherence.
Kalman Rubinson  |  Sep 09, 2007  |  0 comments
All of us have excuses for why we cannot acoustically treat our rooms but a lot of the underlying reason is that many are not convinced that they should make the physical or financial effort. I’ve discovered what I think of as training wheels for room acoustics. Tom Gorzelski of mytheater acoustic panel showed me his simple and inexpensive kits; these are enough to get anyone started. The panels are only 1" thick and, with their polyester filling, light enough to hang with a single nail. Don't expect them to work into the bass, therefore, but Tom acknowledges that they are most effective at 1–2kHz. Also, they come in packages of four 24x40 panels ($120) or two 24x24 panels ($45) because you cannot expect just one to make a difference. Still, hanging a 4pack of the bigger panels should reduce reflections if placed at ear level and, especially, at the first reflection points on the side-walls. It's likely you'll like it enough, perhaps, to do even more.
Kalman Rubinson  |  Jul 15, 1998  |  0 comments
Tone controls? I ripped them out of my Dyna PAS-3! And that was the last time I had tone controls. As a card-carrying audiophile, I wanted just what the engineer had inscribed on the recording, with as little change as possible (read: high fidelity).
Kalman Rubinson  |  May 16, 2004  |  First Published: May 01, 2004  |  0 comments
Without having intended to, I seem to have collected several "statement" products. I've already reported on the Weiss Medea and Theta Digital Generation VIII digital-to-analog converters. I saw and expressed interest in the Nagra DAC at the 2002 Consumer Electronics Show, when prototypes of it were shown along with a forthcoming multichannel version, the Nagra Digital Audio Processor (DAP). The two units are based on the same chassis and interface, the DAP including additional modules and processing.

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