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NSR Sonic Research Loudspeakers
John M. Tabernacki is a pretty interesting guy. He’s a musician, musical instrument designer and builder, railroad engineer, and most notably, loudspeaker designer and builder. In fact, his work with loudspeaker design and construction has captured the attention of just about everyone from international audio journalists to audio hobbyists.
I was introduced to John in 2007 by Greg Weaver of Positive-Feedback Online and The Audio Analyst. John had made a big hit with his Concerto D1 Reference at RMAF 2006 and was going to introduce his new Concerto D3 Sonata at RMAF 2007. Greg was of the opinion that John and I needed to know each other, and was perceptive enough to recognize that we could be, and should be, cooperating in our efforts.
After discussing the idea for some time, John and I decided that I would step outside my normal business model and represent his amazing loudspeakers as a retail dealer.
The leading-edge technology behind NSR Sonic Research loudspeakers.
John Tabernacki has been researching and experimenting with loudspeaker design for nearly 30 years. During that time he’s learned a few things about what makes a loudspeaker sound “right.” Building on those many years of research, John has developed a unique approach to crossover networks and has developed the Acoustic Projection Lens® technology featured in both the Concerto D1 Reference and Concerto D3 Sonata models.
Both NSR Sonic Research loudspeaker models are sealed box designs. NSR has developed its own enclosure parameters, essentially employing a tandem pull/pull motor system in a non-resonant/anechoic sealed box. Sonically, these enclosures, combined with the patented Acoustic Projection Lens® technology, are the genesis of a new, more fortified, and considerably more stable bass system. NSR loudspeakers can reproduce low frequency waves well below the threshold of human hearing, on into the subsonic spectrum, without waveform breakup. NSR developed the acoustic material used to line the loudspeaker enclosures that allow them to function as anechoic chambers, virtually eliminating box resonance. The yield is a crisp, distinct, and powerful bass wave spectrum not found in any other system known today.
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The NSR Sonic Research Acoustic Projection Lens® is truly an instrument; one that re-directs sound from the transducer while trapping proportions of the wave. Through its painstakingly engineered shape and construction, it allows these proportions to be collected and redirected just as with the body of a guitar or violin. Finally, the Acoustic Projection Lens® is built in a fashion and size to optimize the resonance and project the same, in a correlated beam, without signal loss or waveform breakup.
The basic mean function of the Acoustic Projection Lens® is to redirect a propagated waveform composed of resonant frequencies spontaneously generated from the cone surface, and redirect these emissions in a stimulated spectral waveform through prismatic deviation. The transducer is a mechanical diaphragm reacting to electrical impulse that reacts according to its physical makeup. The diaphragm cannot correlate frequencies and deliver a spectrum of separated, distinct resonant frequencies.
The net product of implementing the Acoustic Projection Lens® technology is a blend of frequencies, reminiscent of white light. All the colors of the spectrum are contained in white light, but are not distinct as a result of spontaneous generation. But through prismatic deviation, the frequencies contained in the white light being redirected and deviated, are correlated and distinct. The frequency emissions contained are now regenerated in a stimulated spectral array.
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NSR Sonic Research employs its own proprietary, handmade 24 or 12 dB per octave crossover networks, based on proven Linkwitz Laboratories filter design. NSR does not use Zobel networks or notch filtering in its advanced crossover networks. Both are simply Band-Aids, and as such, are undesirable in a correctly designed crossover.
NSR Sonic Research’s proprietary crossover networks are hard wired in a symmetrical fashion without sharp turns. A smooth current flow path eliminates losses as opposed to coils and capacitors soldered to the thin flat pieces of copper tape on a circuit board. Circuit boards are quick and easy, but losses in the signal path are evident. Solid core wire, bound to thin flat tape and back to wire, along with all the sharp turns, creates improper and unbalanced current geometry. Current cannot squeeze through a maze of filters and then rebound. The losses sustained from this manipulation are clearly audible.
The Concerto Series D1 Reference: Musical reproduction without boundaries.
Simply put, the NSR Sonic Research Concerto Series D1 Reference loudspeaker creates the most amazingly accurate sound field that you will ever hear. After listening to this loudspeaker, everything else will sound like it has one note bass.
Combine that with the most fully-fleshed midrange and delicate highs that you have ever heard, and the Concerto Series D1 Reference is truly a reference-level loudspeaker.
Concerto Series D1 Reference System Specifications:
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Low Frequency Proportion: |
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10” front baffle mounted aluminum/magnesium alloy driver |
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12” forward facing Acoustic Projection Lens® composite cone driver |
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Low frequency drivers work in a tandem pull/pull configuration |
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Midrange frequency proportion: |
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8” front baffle mounted composite Aerogel® cone driver |
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8” forward facing Acoustic Projection Lens® treated synthetic cone driver |
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6” ambient Acoustic Projection Lens® treated cut paper driver |
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High frequency proportion: |
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1” front baffle mounted ScanSpeak® Revelator™ |
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1” ambient Acoustic Projection Lens® direct ring radiator |
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Crossover Network: |
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Custom designed and fabricated three-way, 24 dB/octave, Linkwitz all pass network with flexpoints of 500 Hertz and 3500 Hertz.
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Frequency response: 20 Hz. to 50 kHz. |
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Sensitivity: 92 dB @ 1 watt, 1 meter. 6 Ohms nominal, 4 Ohms minimal. |
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Supplied with Cardas® Single-Wired Patented Binding Posts. Binding posts for bi-wiring are available as a special order. |
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Please email: info@audiointelligent.com or call 573-696-3551 for more information. |
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Standard finish: Genuine lacquered walnut. Other finishes are available. Please email: info@audiointelligent.com or call 573-696-3551 for a quote on your specification. |
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Dimensions: |
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60 inches high each |
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24.5 inches deep each |
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21.5 inches wide each |
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Approximately 250 pounds net weight each. Approximately 300 pounds shipping weight each. |
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Retail price $32,995.00 per pair with standard finish, including ground
shipping within the contiguous U.S. |
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Call 573-696-3551 or write info@audiointelligent.com for shipping quotes to other locations. |
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The definition of affordable luxury and unbelievable sound: the Concerto Series D3 Sonata.
John Tabernacki’s latest creation, the Concerto Series D3 Sonata may be the most amazing loudspeaker ever created. Nearly equaling the performance of the D1 Reference, the D3 Sonata is, without question, today’s best value in floor standing loudspeakers.
The Concerto Series D3 Sonata was the hit of RMAF 2007 and CES 2008 among audio reviewers and audiophiles alike. This loudspeaker offers no-compromise performance in a package sized to fit in almost any listening room, den, living room, or office.
The Concerto Series D3 Sonata is available with the standard custom designed and fabricated crossover network or with the proprietary Reference Xover Network upgraded crossover network. Details are below.
Concerto Series D3 Sonata System Specifications:
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Front line array: |
| 6” synthetic fiber composition cone treated driver |
| 1” ring radiator tweeter |
| 6” aluminum cone driver with phase plug |
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| Bass driver compliment: |
| 8” Forward facing Acoustic Projection Lens® composite cone low frequency driver mounted in its own sealed enclosure using a custom designed and fabricated, independent crossover network, which is designed to produce useful and accurate bass response down to 20 Hertz. |
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| Tweeter blending attenuator control located on rear baffle |
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| Crossover Network: |
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Custom designed and fabricated two-way, 12 dB/octave, Linkwitz all pass network with a flex-point of 3200 Hertz. The standard crossover network is features Auricaps® capacitors and the Erse Super Inductor®. |
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| Frequency response: 20 Hz. to 40 kHz. |
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| Sensitivity: 93.7 dB @ 1 watt, 1 meter. 6 Ohms nominal, 4 Ohms minimal. |
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| Supplied with Cardas® Single-Wired Patented Binding Posts. Binding posts for bi-wiring are available as a special order. Please email: info@audiointelligent.com or call 573-696-3551 for more information. |
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| Multi-chamber cabinet is lined with NSR Sonic Research’s proprietary Acoustic-Comb non-resonant damping material. |
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| Available in four standard colors, all in base-coat, clear-coat
automotive-grade finishes. |
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Radiant Red Metallic  Pure Silver Metallic  |
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Pewter Gray Metallic  Brilliant Black  |
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Other finishes are available. Please email: info@audiointelligent.com or call 573-696-3551 for a quote
on your specification. |
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Dimensions: |
| 48 inches high each |
| 16.5 inches deep each |
| 11 inches wide each |
| Approximately 84 pounds net weight each. Approximately 110 pounds shipping weight each. |
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| Reference Xover Crossover Network Upgrade: |
| Includes the following parts upgrades to the crossover network: |
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| Duelund® and Vishay® Carbon Resistors |
| Solen Hepta Litz™ Inductors |
Your choice of either:
Clarity MR Series® Capacitors or
Duelund® Copper Foil Capacitors.
Please specify your preference when placing your order.
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Retail Price: $5995.00 per pair with standard crossover and standard automotive-grade finish.
Our Price: $5495.00 per pair including ground shipping within the contiguous U.S.
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Retail Price: $6995.00 per pair with Reference Xover Crossover and standard automotive-grade finish.
Our Price: $6495.00 per pair including ground shipping within the contiguous U.S. |
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Call 573-696-3551 or write info@audiointelligent.com for shipping quotes to other locations. |
All NSR Sonic Research loudspeakers are warranted against defects in materials and workmanship by NSR Sonic Research, Inc. for a period of
two years.
Please call 573-696-3551 or write info@audiointelligent.com to schedule a 30 day in-home audition. You pay only the shipping costs each way! Or only one way if you decide to keep them! You must submit a credit card when requesting an audition. Repair for any damage incurred to the loudspeakers will be charged to your credit card if applicable. |
