Brane X Portable Smart Speaker

Brane speakers feature custom Repel-Attract Drivers (RAD) that create audio possibilities where limitation was once the expectation.

RAD uses an array of custom magnets to cancel internal air pressure forces that inhibit deep bass in other portable speakers. This breakthrough defies the century-old audio conventions that restrict other speakers on the market. It was once commonplace that no speaker on the market could be simultaneously small, efficient, and produce room-filling deep bass—until now.

Chances are, the portable speaker you listen to your favourite song on can't reproduce over 25% of the music that the artist intended you to hear. What good is art if you can only see a fraction of the picture? 

Brane X has unheard-of frequency range for a speaker its size. In a field study against other competing speakers, Brane X is the only speaker to cover almost the entirety of the sub-bass range, which falls at 20–60 Hz on the graph below.

For the audiophiles out there, Brane X hits all the way down to 27.1 Hz. Others can only strike as low as 49.7 Hz. That's over 70% of the total sub-bass notes that you're missing.

Prior to Brane’s technology, all speakers had to obey Hofmann's Iron Law of Audio. This longstanding law states that speakers must be either large or draw a tremendous amount of electrical power to produce sub-bass. In other words, if a speaker is both energy-efficient and able to produce sub-bass, it cannot also retain a compact footprint, and vice versa.

The root cause of the Iron Law is the internal air pressure variation within a sealed speaker cabinet. Deep notes require large excursions of a speaker cone/panel as it moves in and out of its sealed enclosure. These excursions create large variations in internal air pressure that must be overcome with electrical power routed to a voice coil actuator. If the speaker enclosure is small, the required amount of electrical power is large. To reduce electrical power, the speaker enclosure size must increase to lower internal pressure variations. This power and size tradeoff has limited the performance of speakers for decades.

Brane's Repel-Attract Driver breaks the Iron Law by using a proprietary array of permanent magnets to cancel internal air pressure forces. This novel force cancellation design allows Brane speakers to be compact, efficient and capable of producing deep bass.

The subwoofer within Brane X relies on a radically designed voice coil that puts the moves on the backside of our semi-rigid carbon-fiber speaker membrane. The RAD's copper winding core is half the normal size, and is supplanted with four tiny magnets affixed to a moving bearing. We call it a Magnetic Negative Spring. This bearing maintains precise centering — and sonic refinement — behind the speaker membrane with help from a sophisticated position tracking and shifting mechanism, along with an onboard air pump to equalize the internal pressure

RAD also compensates for the higher pressure of air compression relative to air expansion using asymmetrical magnetic forces. Our research shows that RAD can be scaled up to concert-size speakers and scaled down for use in earbuds while maintaining an order of magnitude advantage in both size and power consumption. 

Brane X and RAD are covered by several issued (US12,003,940B2; US12,003,941B; US12,003,942B2; US12,003,943B2; US12,126,979B2) and pending patents.