Synergistic Research Carbon Black Box Low-Frequency Tuning Device

Synergistic Research announced the low-frequency resonator "Black Box" over 10 years ago, shocking the audio world. That innovative technology has further evolved, giving birth to the Black Box Carbon.
Unlike simple sound-absorbing materials that merely reduce the boominess of bass-reflex speakers, it uses "sympathetic resonance" based on mathematical algorithms to turn unwanted low-frequency energy accumulated in the corners of a room into musical resonance. This goes beyond mere bass adjustment, transforming the room itself into an ideal musical instrument. By eliminating low-frequency muddiness, the Black Box Carbon tunes the 'phase of the entire frequency range,' making it the smallest yet most powerful room-tuning device.

Main Features

Newly Designed Carbon Fiber Hybrid Chassis 

• Leveraging know-how gained from the development of the Voodoo Music Server and PowerCell 14, it adopts an extremely rigid chassis combining carbon fiber and aluminum. By thoroughly eliminating mechanical resonance, it maximizes the purity of the sound waves generated by the internal resonator.

Freedom from Room Modes (Standing Waves)

• A resonance array based on a proprietary algorithm absorbs and rectifies specific low-frequency buildups and 'accumulations' caused by room shape, eliminating 'room sound' that interferes with the natural response of audio equipment.

Broadband Cleaning Effect Extending to Harmonics 

• Based on the principle that all audible frequencies are linked through harmonics, adjusting the phase at 20Hz clears its harmonic components (40Hz, 80Hz, 160Hz...) sequentially. This makes not only the low end but also the details and image contours of the mid and high frequencies stand out vividly.

Stacking Optimization with Bronze Contact Inserts 

• A newly designed bronze insert allows Black Box Carbons to be stacked together or with older Black Boxes. Carefully selected from approximately 12 different materials, bronze provides the perfect balance of resolution and smoothness.

“Pet-black silence” and an overwhelming sound stage 

• By eliminating noise and turbidity, the sound field deepens behind the speakers and expands widely to the left and right.まるで録音現場の空気がそのまま入り込んできたかのような、真の臨場感をご体感ください。

Operational advice: ideal installation and expansion

A combination of easy setting and aesthetics that changes just by “setting it up”

• There is no need for complicated measurements or large-scale construction work such as pasting sound-absorbing panels all over the wall. Just place the Black Box Carbon, which measures 240 x 240 x 203(H) mm and weighs only 3.6 kg, between speakers or in the corner of the room, and it will instantly transform the room.holographic soundstageYou can feel it clearing up.

A beautiful listening room that eliminates the need for panels

• Unlike traditional room tuning, there is no need to paste cluttered panels all over the room. With Black Box Carbon, you can create your ideal acoustic space with a minimal footprint while keeping your favorite interior.

Total cost performance

• If we tried to achieve the same articulation effect using only existing panels, we would need a huge number of panels and a large amount of cost. Black Box Carbon covers the roles of multiple panels in one compact unit, making it possible to dramatically reduce the total room tuning costs.

Adjustments in millimeter units create “magic”

• Basically, the effect is exerted just by placing it, but by carefully adjusting the position by a few millimeters, a ``magical change'' occurs that fixes the sound field perfectly. Although it is easy to use, you can fully enjoy the real thrill of high-end audio.

The mutual recognition effect of stacking

• "Stacking", which uses Black Box Carbon as a base and overlays existing Black Boxes, is also very effective. By adding one unit at a time, you can take the potential of your system to the next level.

Overseas reviews and ratings & Testimonials)

The Black Box has received extremely high praise from major audio magazines and critics around the world as ``a device that overturns common sense in room tuning.''

[Stereo Times]

"In my system, the moment I installed the Black Box, I could clearly see that the bass became more tactile, faster, and deeper. I used to hear bass pitches with my ears, but now I can feel the bass waves in my recordings shaking my feet. There's a new clarity in the mids and highs, and I'm more emotionally connected to the music. I don't know of any other device that transforms a listening room like this."

[Positive Feedback (Dr. David Robinson)]

“The moment you put the Black Box in your room, you realize how important it is to fine-tune the settings. Not only will you improve the bass, but with careful positioning, the soundstage will suddenly become sharper, creating an overwhelming impression around the instrument.holographic soundstageis born. It was an experience that could be best described as ``Gob-smacked.'' This is the real deal. ”

[Hi-Fi+ (Editor's Choice Award Winner)]

"The Black Box stands out for its ability to convey the intent of the music. What's most notable is its ability to define the 'shape' and 'texture' of the low-end sound. It doesn't just stop and start, it shows the difference between a Fender Jazz Bass and a precision Precision Bass, and even the difference in player style. It's a rare exception that dramatically improves low-end performance without the need for a huge bass trap."

[Audio Bacon]

"By combining with other SR products such as HFT or Atmosphere, its effects are further enhanced. Sound congestion is resolved, and music begins to flow more freely and tightly through the space. It delivers a holographic sound field and precise image contours that are beyond what one would expect from its physical size."